f/EPA
            United States
            Environmental Protection
            Agency
            Environmental Monitoring
            Systems Laboratory
            P.O. Box 93478
            Las Vegas NV 89193-3478
EPA 600/R-93/227
December 1993
            Research and Development
Radium in Water
Performance
Evaluation Study

A Statistical  Evaluation of the
September  17, 1993  Data
                                             9312-0138nri227

-------
             Radium in Water
       Performance Evaluation Study
           September 17, 1993
      Environmental Protection Agency
Environmental Monitoring Systems Laboratory
            Las Vegas, Nevada

-------
            UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
                        OFFICE OF RESEARCH AND DEVELOPMENT
               ENVIRONMENTAL MONITORING SYSTEMS LABORATORY-LAS VEGAS
                                  P.O. BOX 93478
                            LAS VEGAS, NEVADA 89193-3478
                                  (702/798-2100)
Dear Participant,

   Enclosed are the results of the Nuclear Radiation Assessment Division (EMSL-LV)
Performance Evaluation Study for Radium in Water; September 17, 1993.

   The known value for each analysis was determined by gravimetric methods,
checked by chemical analyses performed by EMSL-LV's Radiochemistry Laboratory,
and compared to the participating laboratories' grand average.

   The expected precision, determined by the known value, was taken from
'Table 3. Laboratory Precision:  One Standard Deviation Values and Control Limits
for Various Analyses", which is based on data accumulated over the years by the
Performance Evaluation Program, and can be found in the Environmental Radioactivity
Performance Evaluation Studies Program and Radioactive Standards Distribution
Program information brochure.
   Please take a few minutes to review this  report and the analytical data your
laboratory submitted to us.  If there are any apparent discrepancies, please notify us
immediately.

   We encourage you to make use of the computer-automated data-entry system
that has been in place for some time now. As the number of participants increases,
and it becomes unrealistic for us to receive results by mail or FAX, the computer
system will be our only avenue for accepting data.

   If you have any questions or comments,  please send a message via the data-entry
system or contact George Dilbeck at 702/798-2104 or Patricia Honsa at 702/798-2141.
                                          Sincerely,
                                          George Dilbeck
                                          Chemist
                                          Radioanalysis Branch
Enclosure

-------
               NOTICE

This material has been funded wholly by
the U.S. Environmental Protection Agency.
It has been subject to the Agency's review,
and has been approved for publication as
an EPA document.

-------
          EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993        1/15


   The following pages consist of separate sections for each of the nuclides in this study with four
parts per section.  After the first, each part, is separated from the next hy a new page or a thick
horizontal bar.  The first page of each section is a statistical summary for the nuclide and starts
with a statement of the known value, the control limits, and the warning limits.

   The warning limits are placed at two normalized standard deviations above and below the
known value and the control limits are three normalized standard deviations above and below
the known value.  If you keep control charts, these values will be useful for anticipating problems
with the accuracy of your analytical methods.

   The coin shaped pie chart at the top of the summary page shows the fate of all the samples
sent out in number and percentage terms.  The pie chart starts at the top and rotates clockwise.
The first sector represents those participants who submitted analytical results within both the
warning and control limits. The next sector represents those who are in the warning region but
not out of control.  The third sector represents those who are out of control, but have passed
the outlier test. The fourth sector represents those who have failed the outlier test. The last
sector represents those participants who have failed to respond properly. This is the case if no
analytical results were returned, or less than three determinations were reported, or if the results
were received too late.  The reeding on the edge of the coin is spaced at one percent intervals, and
the sector shading becomes darker as the data reliability decreases. Sectors with zero width are
not shown.
   The table in the center shows a number of statistical quantities calculated from the submitted
data based on the mean and median values in relation to the known value, both before and after
outlier removal. The lower pie chart uses the same construction as the upper chart and shows
the distribution of properly submitted data in terms of deviation from the known value divided
into sectors representing one, two, three, and greater than three normalized standard deviations.

   The second part is an alphabetical listing, in lab-code order, of submitted data and several
calculated quantities. An entry that is shaded has been rejected because of one of the reasons
listed above or failure of the outlier test. The fifth and sixth columns are a measure of laboratory
precision. The Range analysis is a normalized value that you may use to keep precision control
charts. If this value is between 2.0 and 3.0, your analytical process precision is in the warning
zone; if it exceeds 3.0 it is out of control. The eighth and ninth columns are the differences from
the mean of all non-outliers and from the known value, respectively. A tag symbol may appear in
the last column. Each page with tags has a symbol definition summary at the bottom.  If there is
no tag symbol, the data is within the control limits, but it may be in the warning zone.

   The third part is a three-column listing of result average, tag symbol, and lab-code in average
order excluding those labs not responding properly. In this order, all outliers and out-of-control
results appear at the top or bottom of the list.

   The last part is two bar chart displays showing frequency distributions of responding
participants. The first chart places the known value at the center and a bar at each 0.2 unit of
expected precision. The second chart places the mean of the reported measurements at the center
and  a bar at each 0.2 unit of standard deviation. In both cases, a bar includes those results within
0.1 unit up to the maximum of six. Any results more than six units from the center value are
shown cumulatively by a shaded bar one past the sixth unit. If the central tendency of the known
value distribution falls away from the center, an error in accuracy is indicated. If the distribution
is broad, poor precision is indicated. The mean value distribution is similar but uses the average
and standard deviation of reported results as its basis.

-------
2/15       EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993


     The Range Analysis(R + SR) is calculated from the range, mean range and standard error of
  the range values.  The range is the difference between the maximum and minimum results for the
  laboratory. The mean range is calculated by multiplying the expected precision by 1.693(for three
  results).  The standard error of the range is calculated by multiplying the mean range by 2.575(for
  three results), subtracting the mean range from this product, and dividing the result by 3. If the
  range is greater than the mean range, then the range analysis is calculated by subtracting the
  mean range from the range, dividing the result by the standard error of the range and adding 1.
  If the mean range is greater than or equal to the range, then the range analysis is calculated by
  dividing the range by the mean range.

     The normalized deviation of the mean from the grand average is calculated from the deviation
  of the mean from the grand average and the standard error of the mean values.  The deviation of
  the mean from the grand average is calculated by subtracting the grand average from the
  average of the laboratory's three results. The standard error of the mean is calculated by
  dividing the expected precision by the square root of 3(the number of results). The normalized
  deviation of the mean from the grand average is calculated by dividing the deviation of the mean
  from the grand average by the standard error of the mean.

     The normalized deviation of the mean from the known value is calculated from the deviation of
  the mean from the known value and the standard error of the mean values.  The deviation of the
  mean from the known value is calculated by subtracting the known value from the average of the
  laboratory's three results.  The standard error of the  mean is calculated by dividing the expected
  precision by the square root of 3(the number of results).  The normalized deviation of the mean
  from the known value is calculated by dividing the deviation of the mean from the known value by
  the standard error of the mean.

     A complete explanation of the statistical calculations involved in the report may be found in
  the Environmental Radioactivity Performance Evaluation Studies Program information brochure
  [Draft Revision of EPA-600/4-81-004], available from George Dilbeck, EMSL-LV, 702/798-2104.

-------
             EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
                                   3/15
Hadium-226                         Statistical Summary                      160 Participants
The known value of this nuclide is 14.9 pCi/1 with an expected precision of 2.2; the control limits
are 11.1 to 18.7; the warning regions are 11.1 to 12.4 and 17.4 to 18.7
35(21.9 %) Failed to respond •„
7(4.4 %) Outliers '
1O(6.3 %) Out of control •'
      but not an outlier


        Statistic
               . 102(63.8 %) Within all limits
Respondents
"•• 6(3.8 %) In warning zone
          but within control


             Non-outliers
Mean
Std. Dev.
Variance
%Coef. ofVar.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
     15.04
      3.22
     10.40
     21.44
      0.96
      0.04
     15.07
      1.12
      0.05
   Grand Avg 14.73
                1.84
                3.39
               12.49
               -1.13
               -0.09
               15.03
                0.89
                0.07
17(13.6 %) More than 3 norm. S.D. %
6(4.8 %) Between 2 and 3 norm. S.D.
             79(63.2 %) Within 1 norm. S.D.
                           of Known value
     23(18.4 %) Between 1 and 2 norm. S.D.

-------
4/15 EMSL-LV Performance Evaluation:
Radium-226
Lab
A
AE
AF
£\ jA^" v
' AI*>>
AJ
AK
AL
AP
AW
AZ
BA
BC
BG
BH
BK
'vtt Y ^ '
•S.'jjUjfSs ^
BM
BN
BO
C
CA
CE
CG
CJ
r^fa''--'''
1F$ f^ ^
%u/%rf -"^
cs

Res. 1
15.7
15.4
15.2
v.v. w ^ w s A% .. v^vs .,•,•.;.. '.v. %w
^v,^ ^v ^
14.9
13.6
14.4
14.8
14.8
14.3
14.8
15.5
15.5
13.2
13.7
h^^Ji'-^'
13.3
16.2
15.4
15.4
16.1
14.1
14.2
16.0
. '? ••"•••/, y>.-yV; *' •?* '.::-. / s%t.
'"' '^X^
16.1

Res. 2
15.4
15.2
15.3
11 * >?"*' '*""?""/?••
,,;">/;<"- !
15.6
13.8
15.3
15.1
15.6
14.1
15.7
15.9
16.9
13.7
14.5
:;A^ ^-v-
14.9
14.3
15.4
14.2
15.2
13.9
14.5
15.0
.. ...iXJ.. ../^.'-ftjV"
V'XT,:^
16.5

^K^-^;:^'^^ '-'$*
DB
DE
DT
DZ
E
EB
iEH*
EO
EP
ER
FE
FN
FP
FZ
•• ., '}V"ft- ft
n GCaC
(ofti
GO
• =
0 s
15.0
14.1
15.2
15.3
14.3
15.0
;•>', ;$ v''^-,> -f
14.8
13.6
15.6
16.1
15.8
^ V O
9.7
"ij"' ' "> \ •'""./ ' "\ ^ s
v^..v .v/V, ''' •' ••>•• "i * *•/"
^\%%^"v ^ >A, ^-Q'-'tt •''•''•' f"
HA* '1>*''X^'%b ^b*O '^'^
14.3
14.4
14.2
15.3
14.8
14.5
»„ ,1,5;2
'•^KsK^
15.5
14.3
15.8
14.8
15.0
'' -\ 21.9
8.9
< ^'"^X- -w ' f^,(
',,ji \l%lv J
, \ \ ' « 4
143
Res. 3
15.6
15.5
15.2
'^f'j.'*^'*1?1? ™ ™'"' X
^ "*^^* ^ *,\^
15.7
14.4
14.4
15.5
15.7
14.5
14.7
15.9
16.4
14.3
14.6
-$ ' ^^ •• - :
14.3
14.8
14.9
12.0
16.5
14.8
17.6
15.0
, ••-• ...... .\ v "".:• *'"" \ ' v....v ^ ' -
^ ' .. O^f ••• " ._ ' '•. I
14.6

&f- -if -^- . '•< *
*4v\' ^ 1 ' tv. s~~
15.6
14.2
15.1
15.0
14.2
	 14.7
^^-f,V:^'-
15.3
14.1
15.6
14.5
15.5
.,»- ' 20*4'
12.0
' <.v * '•• ' ^ " "• J< * "' s ^
v/5 ;" "• .., .- "- .- .-
^xt.^>'2':ft\
15.0
No data submitted
Insufficient
data
X s
Radium in Water, 17
-Sep-1993

Exper. Rng anal Normalized deviation
Sigma (R
0.15
0.15
0.06
^ ;.«•• ' -. ^ ^
'"~-< , , -
0.44
0.42
0.52
0.35
0.49
0.20
0.55
0.23
0.71
0.55
0.49
" ' •• i ':: •• ' '
0.81
0.98
0.29
1.72
0.67
0.47
1.88
0.58

-'" ' ''
1.00

"'-'"' I
0.60
0.06
0.10
0.25
0.15
0.25

0.36
0.36
0.12
0.85
0.40
J 1.26
1.61

,.
0.15
0.40
+ SR) Average (grand-avg) (known) Tag
0.081
0.081
0.027


0.215
0.215
0.242
0.188
0.242
0.107
0.268
0.107
0.376
0.295
0.242

0.430
0.510
0.134
0.913
0.349
0.242
0.913
0.268


0.510


0.322
0.027
0.054
0.134
0.081
0.134

0.188
0.188
0.054
0.430
0.215
0.671
0.832


0.081
0.188
15.57
15.37
15.23
-. VfV^. f t. ffjf ffHfv.^.. fnv. V.

15.40
13.93
14.70
15.13
15.37
14.30
15.07
15.77
16.27
13.73
14.27
- 'VS"1 >^rv^
14.17
15.10
15.23
13.87
15.93
14.27
15.43
15.33
' .- ...v .-V ^.
1 '
15.73


15.00
14.17
15.20
15.03
14.33
14.97
=: ' ' *
15.20
14.00
15.67
15.13
15.43
21,73
10.20
- """ ^ '•-••
«• "; ••
; 2,93
14.53
TAG SYMBOLS
Determined to
bean
outlier
0.66
0.50
0.39
'"" '*W, ""/-.t ^ vw.fftv.Wf s^v.
-1 '""''••>•.
0.53
-0.63
-0.03
0.32
0.50
-0.34
0.26
0.81
1.21
-0.79
-0.37
"w.5* -;''", ^
-0.45
0.29
0.39
-0.68
0.95
-0.37
0.55
0.47
^. . ^ j ' ,""v .. t?'J.
'-,,-'-•
0.79

5 r " ' -.
0.21
-0.45
0.37
0.24
-0.31
0.18

0.37
-0.58
0.74
0.32
0.55
5.51
-3.57


-9^20 ;:
-0.16
tt s Above
JJ. = Below
0.52
0.37
0.26
.>>.,% vv.vc';^".' "*^ •• ' ^'"••jyt\
' "-,-• "- ' * <•
-. ' -f •, -,-,:
0.39
-0.76
-0.16
0.18
0.37
-0.47
0.13
0.68
1.08
-0.92
-0.50
' ;- '^' 'V,* •-•
-0.58
0.16
0.26
-0.81
0.81
-0.50
0.42
0.34
.• .. s.. .• .V.V.V.- ,•
-••• . ,;, •
0.66

;- , ' •
0.08
-0.58
0.24
0.10
-0.45
0.05
~ '- -• '-
0.24
-0.71
0.60
0.18
0.42
, 5.38 X
-3.70 li
-. \
• -
-9,42 x
-0.29
control limit
control limit

-------
EMSL-LV Performance
Evaluation: Radium in Water,
17-Sep-1993
5/15
Radium-226

Lab
GQ
HE
HK
HL
HP
VjHGf*
I 	
""T A?^V >*
s -.A**.5 *_•,••
ID
j
JE
JG
JN
JS
JX
JY
K

Res. I
12.9
16.8
14.8
14.2
15.9
5" ^7^"
14.6
\^ Ax-?>^ \ivT"-"-^
^^sV^'C'f "s!v% "^wji
19.3
14.8
20.2
17.1
16.5
14.0
14.6
16.9
12.5

Res. 2
13.2
16.1
14.4
13.1
16.5
V^JlaX
13.6
^?5T ^ - -x^0"
^^•.V.'" " ^^S^
19.0
15.7
6.4
18.4
16.6
14.0
15.8
17.7
13.8

Res. 3
13.4
16.8
15.0
13.8
18.7
;;T "t!;?^
	 ^15.3 %'


19.5
15.0
20.0
15.1
13.3
15.0
15.1
12.0
Exper.
Sigma
0.25
0.40
0.31
0.56
1.47
0.10:
0.85

^ •>
0.25
0.47
7.91
1.66
1.88
0.58
0.60
3.09
Rng anal
(R + SR)
0.134
0.188
0.161
0.295
0.752
d.064 -
0.456

^ s ^
0.134
0.242
6.153
0.886
0.886
0.268
0.322
2.010
12.5 0.75 0.349
^WBl^- ^v^-V^^^^T^ ''*'£*''- ' '^" \x * ' , •" '"'V* v''~ ' - ':' ' <" , "V-
^T^ \s ^
KH
KL
KZ
L
v-i»A^
LB
LM
TLJ&.'
' LT "
LZ
N-^r ViMi-ty^
&1nKt
'jMffi^
-'MY*?
*>? • r*T
N
NG
NH
NO
NT
OB
OF
;MiP
.-\Vf.IV
!SkVX>;KS?i
" '•**•*£ x
ox
OY
-'^F-TaT^
^vQz«;
p
PB
• =
0 =
-., s vSs , ' Sstt s" s
14.6
15.5
13.6
10.1
^';^=3v3
12~2
12.7
^.^;>;!A' 1
^13.0
15.2
^ ^ V \ s sX ""^ " % -XV
*^^^^fp*^f*$v>
V"""*17.3"
iirjs^^s^
"^^'istr^
13.5
12.6
14.9
14.8
18.6
12.7
SP5B^, ;r7{\rC'"^\

^I'S^I-^i^'" \*
t™l\3n'v^
12.3
12.6
^f;' U^C-.-,
12.5
15.2
\- w x-^ v s\ s
:^^'-'^-.\S: ^ ^
17.3
^1^^^
16.2
13.7
13.7
15.1
15.4
16.6
16.5
i-.f. ^,v*f.v.-,^-\!
-Ifcio'l ^'t. s
13.4
16.0
13.7
10.2
*- 4 ,\v-v<, -•
	 12.4
12.5
ii.> *„«• - '
14.2
15.0
sX° s ^ v*.t\i ^ '" "-
;v;"\V\o TV**"" J^
16.9
"cAS^-"^^s'"
15.4"
13.5
15.9
15.7
15.9
18.6
_16.7%i
- - ^ \ * j. h s \
t""1-- ^ ^w X< -.'" "'^ v
i •• •> « Ni\ X\ *• ^ t^-c ^ ••
\V S ^ i s\ •• ""
•- "" - SV, ^! rt^>'k ^S s
14.9
15.0
WJ. ^%W%%^ -. \ ^ S
V ."sUs-. ^ /-»^', >
17.3
15.7
No data submitted
Insufficient
data
x =
.. O X s s / •• ""
0.64
1.21
0.10
0.55
«' \ ^
0.10
0.10
• »,' , -, ~
0.87
0.12
•• "" " ^ * * % „ ,v x
" "' " '"?
0.23
"~""""\s -.
0.21
0.32
^ W ^ V
1 x" '"
0.38
0.06
s %
0.322
0.618
0.054
0.268

0.054
0.054
~ x\5
0.456
0.054
v s <. s\
,> - " s\r
0.107
~5>y "-~T *>
0.295
0.054
0.886
0.215
0.295
0.537
1.141
\ •• •• "•'

* % "
, , *
0.107
0.161
^- ^ •••.•• ,"

0.188
0.027
Normalized deviation
Average
13.17
16.57
14.73
13.70
17.03
.* ;~^7i3dr
14.50
•' ™!™ TY™ "
<\c^ ts^\
19^27
15.17
15.53
16.87
15.47
14.33
15.17
15.53
12.93
s * o* ^ * *r
v J ""*• •. i "
13.87
16.43
13.60
10.47
°^-\ : "'- - »:'t
12.30
12.60
11 '-"7 -x- - ^
13.23
15.13
v% *' v V ^ A % \
V°xx^' V^%
„ ,,,,17-11
^%S^.- ,x v
15.13
15.13
^ -^ -•• •- "^ ^
^.. ^**f i^.\c ,,V--
17.03
15.77
TAG SYMBOLS
Determined
to be an outlier
(grand-avg) (known) Tag
-1.23
1.44
o.oo
-0.81
1.81
'' jf^:^^*— •
-0.18 	
^-v,-^ ^ ^ yiv;*-- •• -
v^-^ "" X*^"1 * * S ' ^ ** •? ^
3.57
0.34
0.63
1.68
0.58
-0.31
0.34
0.63
^-1.42
x!*""" -"' "•\>'ti';T7",\
^^ s \^-% s s* **v ,s % s *s\
-0.68
1.34
-0.89
	 -3.36^ 	
^^5:^:vJ^?x^
-1.91.
-1.68
-v, *'* .^^-^
-1.18
0.32
0 * w X5 -X^^''v s •• ^ % \ ^ "
,x ** p *\v^% , - ;;;x A^*OVS
' , ! .M2
f ^^r"' w y^ " '*vs>7^x T™1
0.66
-0.92
-0.52
0.39
0.50
2.52
0.45
^" ^S^V^j^f1 ^Ts

"y x s ^ ,.s ^ - -.>N •' * \ -. -^
"•1%-.V\ •••.'•\ ^ x Vv x\
0.32
0.32
"• ••'••• V "\: ^** sl> sv s "" " ^^ 5
•• 'x\% \ ^ N ;^ '"••'• \ s^
1.81
0.81
ft s Above
II s Below
-1.36
1.31
-0.13
-0.94
1.68
i6;98ysV"
-0.31
v,lX v* «y*
v s^ ^ o" " --N *
3.44 ft
0.21
0.50
1.55
0.45
-0.45
0.21
0.50
-1.55 	
o ""'*"' "V "i
- \ ^ ^ ^
-0.81
1.21
-1.02
-3.49 b
^:-\ ::\: >#'
-2.05
-1.81
''"- V\s ^ "'„
-1.31
0.18
j rxt- s -"•. ^v ^ v s
" ^ " " ' 5 x *"" "
1.78
~^~. " »"""
0.52
-1.05
-0.66
0.26
0.37
2.39
0.31
-f-\- ?' "" \ '' T'T

0 v ;
' ^ ' ' '' ' *x
0.18
0.18
"\\"^ ^ -. * ^ v ^ '*
'vVX ,- - ", U- s*U'
1.68
0.68
control limit
control limit

-------
6/15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-226
Lab
PC
PG
;::.>::;:»:v;^:*S?
Iplpll
PT
PV
PW
PX
:::.:-: :.:.::::::: :*:#&;.$;

Q
QB
jjjjjijjj
.„
Upll
•:i:!:i:|?;Jk.4ii^:^
&tf\'ja'&
m*tl*m
QZ
R
RA
RC
RD
RF
imii
RM
RNm
lUiPPi
RW
mfffigsfips.
ii-jjijijAidm:^?
RZ
S
HIP
:•>:•> |i^«%>;V:
:•;*: >,•.•:•-:•.-:•:• ,•:«¥
sc
SD
SF
SI
SM
SS
ST
SW

"sz 	
T
TA
TD
TG
lijiilf
TI 	
• =
0 s
Res. 1
9.7
16.7
^&XM$&tititittiftf^XW£tff\

18.2
19.3
11.4
14.8
ftWftyffii^^ft^ftiWftWS^^ftvft

16.4
14.9
lil|188lilll$;tiisl|;f
__,_

M^^^^^^^^^M^:
^^n^dli^^
	 14.3 	
14.2
16.7
14.3
10.0
18.6 	
il!pllllllllillilll$
15.5 	
18.0

13.0
14.2
16.0

14.6
14.5
14.8
14.3
13.3
14.3
15.1
	 13.8 	

14.8
15.2
11.2
13.4
14.0

19.5
Res. 2 Res. 3
10.4
17.1
S?:3*:-:?:':-:iS^:^

15.2
18.5
17.8
,,.,.,,.,.,,lll 	

lii^pliiilii^mliiliii^^iiill^l
15.9 	
15.3

~jwL4'~r
|iilpi25i§s^li;Hl
^Sis5|^i|S^sSsii|^lsS|^i

" 	 13^3 	 "
14.4
16.5
15.7
9.4
_ 18.3_
iKi^i^^^^ii^^^ii^i^^i^i:^^
™15.7" '
17.7

lllj^-illll
14.5
16.0
^S^^fcl^iiSlil^
	 15.5 	 '""*'"
13.4
14.0
11.3
12.3
13.9
15.1
11.4

14.5
15.0
9.6
14.1
13.8

*__.
11.1
16.7
:•&&:&%:::::::;::£$&
i||f|||;$$;;;;f£
14.4
17.9
14.1
14.9
W'SSSiSSSS&S

__
JL4.9 _

9.9



~13~S
13.0
15.1
14.5
8.8
21.1_

,.„,,,
18.7
Sii-S^sSJift^SSi:;;
"jEH
$SSS-SS*{ii:Bij:i::;:S
14.7
16.3
Ililllill
"iiB'J
14.5
16.0
11.8
13.0
12.6
15.1
13.0

15.5
15.2
10.5
14.4
15.0
mglmjgggi
__
No data submitted
Insufficient
data
X =
Exper.
Sigma
0.70
0.23
:::^::::::::::::::::::!:!^;-:^i-:::-S;';:::S':':^:^;::::::^::::::x
lillllllillllll
2.00
0.70
3.21
0.15
S;:V;gig;:|:yKS;^:i:;:^:i:i:;:;:;:;:^|::::::::^
Bllll^BPIllll
,„.„_,,,
0.23

	 '""0.55

^^iiliilisifiiiii-iS:;^^
^^Blil^^BIi
	 0.50 	
0.76
0.87
0.76
0.60
1.54 ^

	 '""o77'6''""''
	 _0.51v 	
•^iwi^i^^^^owp^^iiii
~^ie~'
*""~0.25 	 "•"
0.17

1.11
0.64
1.01
1.61
0.51
0.89
0.01
1.22

	 0.51 	
0.12
0.80
0.51
0.64

""™"a95"""""
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.376
0.107
y&&x$$$^?m-M'
illfli!!!!!!
1.039
0.376
2.368
0.081

^^fj^^^^^^
0671
0.107

6.295
llffliHi
3S^$$f£l&^yms$.
lliiiliillli!
0.268
0.376
0.430
0.376
0.322
0.752
i:::::;::::::::ft&Sx$&:;:;:::::::::$::
W&&$&t&&V^$$f&
6.376
0.268
m
0.618
ai34
0.081

0.591
0.295
0.537
0.805
0.268
0.456
0.000
0.644

0.268
0.054
0.430
0.268
0.322
™S5s?f !l •••fjy Qjv
6!5i6
10.40
16.83
^Sw:^:-:-:S:i:W^

15.93
18.57
14.43
14.77
x&:::tf::$:i;;:;:;:::S::::fS^^
^Biillll^^SilHIIli
	 16.90 	
15.03
gs$;g$gij:;:;:£;:;:;;;:f:;r^^
i::::^:^i^S:K;SS::::::;i::::;«^:S^:;;:;:::::i:;:;:::;:^^;i:^
9.87

1?;li£££&!$::i:i£i£^^^
i^^iiiii^^iig^ii
	 13.80 	
13.87
16.10
14.83
9.40
	 19.33^

liTif''™"
	 w!8.13 	

'"'™™W-?f'"'r'
'"1147"""""""""
16.10

15.63
14.13
14.93
12.47
12.87
13.60
15.10
12.73

14.93 	
15.13
10.43
13.97
14.27

__...__„.._
TAG SYMBOLS
Determined
to be an
outlier
-3.41
1.65
^i-iwiiiS^S^i-iS-S;;^

0.95
3.02
-0.24
0.03
:::ii::S-^^':;:::i:^:Si^:::?:::^:::^?
^li^plillSiil
..___
0.24

	 -3.83 	

•::S^^^S::i^::::^5::::::^HftKS

-0.73
-0.68
1.08
0.08
-4.20
	 3.62

	 0.34 	
2.68

"'-6.52'""
	 -aii
1.08
iiiii^i^i
	 6.71 	
-0.47
0.16
-1.78
-1.47
. -0.89
0.29
-1.57

0.16
0.32
-3.38
-0.60
-0.37

3.78
tt s Above
$ = Below
-3.54 Ji
1.52
:^#:$##iv?:£i:;i;i:i^
j^Blill^B^Ii^
0.81 	
2.89
-0.37
-0.10
j^«::^ry:|5::::;:::^:^tt^:::::::;i|:::ffW^
MII^BIIIs-iSS
	 1.57 	
0.10
:::o::::::::i:!^i^^-:::;i;^:^:::::::i:o::;:;^i;S^SK::%
-_3^— J™"
Rllllllilll
^w^:^:::ii^^^:^?;^:i:i:::::;::ii;;::^:^^

-0.87
-0.81
0.94
-0.05
-4.33 Ji
_3.49_ 	 It

	 6!2i 	
2.55

""-0.66
tf:::::::::::::::::^:^^^:?:^*
-6134 	
0.94
HMilllilpIi
	 0.58 	
-0.60
0.03
-1.92
-1.60
-1.02
0.16
-1.71

0.03
0.18
-3.52 U
-0.73
-0.50

''''''3^5''"'""'"?"""
control limit
control limit

-------
EMSL-LV Performance Evaluation: Radium
Radium-226

Lab Res. 1
^Vft^Vxh11^ "° £ O"^'* ' * -c
.TU^" ' 14.4
£' TV^IP*? Iv -'^fcl^
\|^rf|^ U^J ; %>
JJ "^ * *14.1^
s;^ ^V^«W-V|^V s;s«ss™v.^w^
'\^ ^lf-^-S.^%^
;<\jUC-|j^V-| !> ' <* X, J^
\3EA""~^iaA
UI 14.2
UL 11.7
cUN^|^xxf§9)^
UP 15.5
J?ft.^™JL3:°L
'^us J^s^^-^^-^
UW 15.8
's v^/ji^lx^f xxf vpy-j" * J- vS!>?
,;«VAv;i',v H,\j* V"°i\*\-
Vf 15.2
X 18.7
Vw^^^W'fK^f^
/-I>; -iV^-f^- >

Average
2.93
7.30
8.90
9.40
9.87
10.20
10.40
10.43
10.47
11.57
12.30
12.33
12.47
12.60
12.73
12.87
12.93


Res. 2
J&°*&**^Vs - V *S/
%*v^V$7%^ ^0° v^
10.5
11.9
•• »S^ •^'^^••^v'.'^fW'i^v.^^''
^>;4 ^^ * ^T* ,
\V-\-- •".•.> A SSl\ "-S
14.0

s^V^s"* X X"X '"'^
'^''flx-*-°X'v * ;Vi
-vy~ 0V!' "'-°-'\,<;
J_^ 14JS_
X->-H^$l>^>':3
I;,- >%1l\s^
^Xtrl2.9^
v^r'^r'T*^ N^^
i^^\ V \%^
11 v^;T*T xty^V
12.7
15.4
11.4
^-Wi?28i^-*
16.4
^UM
^^v??'!jo%T^^
,7.,'"14-4'
- 4,~4!s:,\4-''''>x"~x»i-'
-?-' tv'^1- !\>" -
15.8
16.2
'l^x!'®:"?!"--^;"^
: ^^r ,--, >> •-

Tag
X
X
u
Ji
U
II
Jl
U
$.










Res. 3
"s"^" -{ >t-^ -K -'•'"'
N^1-" ^S\
8.5
12.8

x v^;^-^
s? ^ ^ s ^ w * \\
15.0

-- , ,X ; ; ' '
^»* ' '\ "-* >Y ,
,-\ o--^ ,,;-V'
J^'~ J4?4
f^i " "\ '^
x<{; 4''^V,vXC
JJJ 13:3
^\\' "j"C^- "--
"&\^"\J,:,
'" °- •-*. " - , '
14.6
15.6
11.6
r^ -2-7.6
16.7
w«^A4/5
"-5TTT,'-t>!f
'.".".,. I14-3.
y -*^^V*\ -s^ "V
, **. s - -•?- -':
15.4
15.9
; -s-x~>-- ^-ir^.
- V" v--^
Data
Lab
GN
HU
TL
RD
QU
FZ
PC
TA
L
UL
LB
TN
SI
LM
SW
SM
K

Exper.
Sigma
*• "••* ^ -."" Oi"^-
•• s s " '^ V
1.44
0.45

,- - >' - '

1.05

*; ,- ,,
-\ " ,'--,-••'
1 "v s-s°
0.06
:\ - ,,-,-; ^
^-'. ,_,,( ,^\-
0.61
,-,-- , ^-- xv, v^-
„ --" ! •/•/„'' * -^
*,"""'?", *- "'.
0.96
0.76
0.15
^\ 7"'llll
0.62
1.00

"7°-84
*x ^ Vs sO* j*
-,, " *
0.31
1.54
-•-•.p •••„ ";'\'r\ ; '•**"
"" , •>

Rng anal
(R + SR)
- ,- • \ , ' "

0.752
0.242



0.564


11 X •• ""^ " " *

0.027
„-,,<*- - - s-s,' ; .,,
;-: \ _ „„;;>; x - %
0.322
•* " ^svT* s K"V\^^
"" " \* , ' X ?
N ; , \ s --v ••
0.510
0.376
0.081
5-'rO;691°- s
0.322
_,,,,0.637w
'-" ". ' '^xT-j
0.403

•- "" ^^ *v
0.161
0.752
v ss ^ .^ ^^ s-., ^ ,^

in Water, 17-Sep-1993



7

/15 1
'
Normalized deviation
Average
:-\\*>- -'-^

8.90
12.33

" \ s, - ]f ,
^ % \ = ^
15.03


,\'~ '"' ' --,' s'
<^-i\--
14.43
,v-~*-i!-,-vC
:' - \-x-;C"--x
13.43
%" 5 % T-' ^ ^™"'
^"•""^ ^^, ss ^^^
o ^\^.^ ; ' 7W
13.57
15.07
11.57
-";!" 28^87
16.20
14.00

14.83
", -'^- ~*K
,- Jxv i - -
15.47
16.93
s" -" s ^
^H^ ""**
(grand-avg) (known)
x , \, -
, i %-^?i«.



xr - Sx



-•ox, --x
i - - - "


o^x-^s ,;
ft^' '>"•

,^^t""-;^
vYt:'-
; \ - ,



-yow-


^ f ™w.s

^0 - -;
"*"• ^ \ ^


" > ^

s *- v--%r-"- v^- '
S\ ^X^*^ ^^NV-S
-4.59
-1.89

\ -x,;\ sks ;•
- , * - ,-5' \
0.24

0 -* -,^^*V' ; ,,^
- -\ '!x!\ \>? ' '
-V* f'v^'.'-!"-'^
-0.24
?:-,|^*>4?\\\,--
:H\V -^'^
-1.02
SC--" - "-"-t^ -x^x *•- -^
.o'-tv-^s^r,-^ '
V •'' ^^^
JL"»5/ « s'!>^ -.^ v «
1.16
-0.58 ^>w_
~L-\ ^r^r
0.08

, -• ° , N ~ v v-
0.58
1.73
- .' "f,v !VX
---,-, - x
V,V" , ---^s
fj!^™ s ^ "" ^
-4.72
-2.02

^_, --,- !-^^

0.10

,\x^ 'x-\ V,x^
- ' v * V \\ '
ssx,^ Vs'
-p!37
~\r^ - .v*-
V" ''--iv-'}
-i!i5
s\Xvf \^ ^
's ^^ ^%*

-1.05
0.13
-2.62
10;84*''"
1.02
-0.71
^->- "iC - !
-6.05
*s , *^
^V ~ ^ ^ ^ *
0.45
1.60


Tag
*A " v"- -
••X V^*^x>^
1 	


- - «; t
v-


f\, •- , --
-- **<
, "••''-';-

«-#• » \^
1 --«-••;

' o^%- "" .
-V," '->:
, " * -

-

'; x -- '


-- • -

«- ,
*, x- \,-


\> " ->'-<•'
.'-- 	 '.''
sorted by Laboratory Average
Average

















• = No data submitted
0 = Insufficient data
X
13.17
13.23
13.43
13.57
13.57
13.60
13.60
13.70
13.73
13.80
13.87
13.87
13.87
13.93
13.97
14.00
14.00
Tag

















Lab
GQ
LT
U
UE
NG
SS
KZ
HL
BH
QZ
R
C
KH
AK
TD
UQ
EP
Average

















14.07
14.07
14.13
14.17
14.17
14.27
14.27
14.27
14.30
14.33
14.33
14.43
14.43
14.47
14.50
14.53
14.70
TAG SYMBOLS
= Determined to be an outlier
Tag







1









ft = Above
$ = Below

















control
control
Lab
RW
NH
SD
DE
BM
TG
CE
BK
AZ
JS
E
TU
PW
RZ
I
GO
AL
limit
limit

-------
8/15 EMSL-LV Performance Evaluation: Radium
Radium-226

in Water, 17-Sep-1993

)

Data sorted by Laboratory Average
Average Tag
14.73
14.77
14.83
14.83
14.93
14.93
14.97
15.00
15.03
15.03
15.03
15.07
15.07
15.10
15.10
15.13
15.13
15.13
15.13
15.13
15.13
15.17
15.17
15.17

% responding labs
Lab Average Tag
HK 15.20
PX 15.20
UW 15.23
RC 15.23
SZ 15.23
SF 15.30
EB 15.33
DB 15.37
QB 15.37
TQ 15.37
DZ 15.40
UI 15.43
BA 15.43
ST 15.47
BN 15.47
T 15.53
OY 15.53
OX 15.57
LZ 15.57
FE 15.63
AP 15.67
RM 15.73
JX 15.77
J 15.77
15.93
Frequency distribution
Lab Average Tag
EO 15.93
DT 16.10
NO 16.10
BO 16.20
AF 16.27
OF 16.43
CJ 16.57
NT 16.83
AE 16.87
AW 16.90
AJ 16.93
FN 17.03
CG 17.03
W 17.17
JN 17.93
JY 18.13
JE 18.57
N 19.27 ft
A 19.33 ft
SC 19.53 ft
ER 21.73 x
CS 25.37 x
PB 27.33 x
BC 28.67 x
PT 28.73 x

Lab
CA
S
RA
UP
BG
KL
HE
PG
JG
Q
X
P
HP
MS
OB
RN
PV
ID
RF
TI
FP
QX
RV
UN
TH


1


0 I 5
•_ _ •.•.-Illllllll-l-.
'-20
_|_ 	 ._
+2 ' +4
|
+6
Normalized deviation of the mean from the known value
• s No data submitted
0 s Insufficient data
TAG SYMBOLS ft = Above control
x = Determined to be an outlier !!• = Below control
limit
limit

-------
            EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993       9/15

Radium-226
 % responding labs           	Frequency distribution   	 	
 10
     -6            -4            -2            0            +2            +4            +6
                    Normalized deviation of the mean from the grand average

-------
            EMSL-LV Performance Evaluation: Radium in Water,  17-Sep-1993
                                  10/15
Radium-228                         Statistical Summary                      160 Participants
The known value of this nuclide is 20.4 pCi/1 with an expected precision of 5.1;  the control limits
are 11.6 to 29.2; the warning regions are 11.6 to 14.5 and 26.3 to 29.2
54(33.8 %) Failed to respond .
11 (6.9 %) Out of control
      but not an outlier


        Statistic
                 85(53.1 %) Within all limits
Respondents
•• 1O(6.3 %) In warning zone
           but within control


              Non-outliers
Mean
Std. Dev.
Variance
% Coef. of Var.
% deviation of mean from known value
Norm. dev. of mean from known value
Median
% deviation of median from known value
Norm. dev. of median from known value
     19.57
      5.09
     25.95
     26.04
     -4.09
     -0.16
     20.08
     -1.55
     -0.06
    Grand Avg 19.57
                 5.09
                25.95
                26.04
                -4.09
                -0.16
                20.08
                -1.55
                -0.06
11 (1O.4 %) More than 3 norm. S.D.
10(9.4 %) Between 2 and 3 norm. S.D
             67(63.2 %) Within 1 norm. S.D.
                           of known value
    • 18(17.O %) Between 1 and 2 norm. S.D.

-------
11 /
15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-228
Lab Res. 1
A
AE
AF
AI
AJ
AK
AL
AP
AW
AZ
BA
BC^
BH
BK
;BL"
BM
".BN*
BO
C
CA
CE
CG
CJ
CS
DB
DE
DT
,,DZ,~
EB
•JBHs
EO
EP
FN
FP
FZ
GN
• ™
0 =
35.3
20.5
19.2
17.2
19.3
20.9
25.1
17.5
18.8
17.2
11.2
J8.1 	
22.1
22.1
,f~]^ '-f-^y^
_^L2°;-L,~
v^v tf\v ;^*»^  % •* f ^ "• ^!"
	 ^5.5
h%%' V % ^ X
No data submitted
Insufficient
data
X S
Exper.
Sigma
5.11
1.27
1.63
2.87
1.52
1.08
0.31
0.75
0.72
1.05
0.46
0.72
1.00
2.23
' •> *.
0.51
'"""",- ;
0.84
0.90
1.59
0.47
2.32
1.15
•>••'•, ft'-
0.06
" ^ ;v
0.40
0.06
1.78
0.10
0.90
-vV -',-
0.45
0.40
0.59
0.75
2.65
0.40

Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
1.323
0.266
0.347
0.625
0.347
0.232
0.069
0.174
0.151
0.243
0.104
0.162
0.232
0.463

0.116

0.174
0.208
0.336
0.104
0.521
0.232
0.012
0.081
0.012
0.394
0.023
0.185

0.104
0.093
0.127
0.174
0.579
0.093
30.70
21.33
20.33
19.33
19.57
22.13
25.03
18.27
19.63
18.20
10.80
18.70
21.13
20.67

	 19.97__
.-.•'_ .•".•>' ' <•• , ';,
20.97
24.50
20.97
21.37
20.77
20.67
18.13
16.27
21.93
19.40
20.60
6.93

20.47
18.60
20.97
11.57
12.00
5.13
TAG SYMBOLS
Determined
to be an
outlier
3.78
0.60
0.26
-0.08
0.00
0.87
1.86
-0.44
0.02
-0.46
-2.98
-0.29
0.53
0.37
- '• .,, -•
0.14

0.48
1.68
0.48
0.61
0.41
0.37
-0.49
-1.12
0.80
-0.06
3.50 ti
0.32
-0.02
-0.36
-0.28
0.59
1.57
-0.72
-0.26
-0.75
-3.26 U
-0.58
t~ '• ; ' \ f »>*
0.25
0.09
v-'',:' '-'-;-•' *;v>
-0.15
"'-,"'' /A-.-i^s
0.19
1.39
0.19
0.33
0.12
0.09
-0.77
-1.40
0.52
-0.34
_0.35 	 ^.^,0.07 __
-4.29

0.31
-0.33
0.48
-2.72
-2.57 	
-4.90
$ = Above
II = Below
-4.57 U
' " - ' "- * i -
0.02
-0.61
* ••
0.19
-3.00
J2.85 	
-5.18 ^U
control limit
control limit

-------

EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-228
Lab Res. 1
GQ
HE
HK
HL
HP
"-fief
A__
ID
J
JE
JG
:k*JN>l
JS
JX
JY
JK_^
KH
KL
KZ
.JL^.
I!!
""-• j..^'.'^ ^^^^
""'"19.7"
^HIv
_*.». ^j
22.9
„ ^_1?.2 %
19.6
22.5
17.8
18.3
• s No data submitted
0 s
Insufficient
data
x =
Exper.
Sigma
0.75
2.80
0.75
1.79
0.68
1.39
0.59
1.73
0.29
2.09

1.53
1.10
3.41
__3.52s
2.00
2.36
0.01
:r^0.15^
** \\
!-,-_--'•- A-
2.33
-' ' '' ,"
1.80
1.36
	 ^0.53 	
0.91
0.10
0.90
0.38
1.91
5.44
0.72
12/15
Rng anal Normalized deviation
(R + SR) Average (grand-avg) (known) Tag
0.174
0.649
0.174
0.405
0.151
0.313
0.127
0.347
0.058
0.440
>;Vr-:\
0.347
0.255
0.764
0.718
0.440
0.544
0.000
0.035
. . > --
'" > , - -'
0.498
^ v v ^
0.417
0.313
0.116
6.208
0.023
0.208
0.081
0.440
1.257
0.162
27.47
17.83
18.50
20.47
19.23
19.53
*"- • v^ -'";">' , "i^' ^ x-,-v
21.87
19.20
8.57
14.80
:;" ,->\;s- -:*:'
22.33
16.93
21.90
16.47^
19.63
24.00
19.30
:;• -AV-?€^
-••\ •>'-;J-\
*-. >. ff S ••>•.•* ^ ^-i,s
	 _21.87__'
' ::"%'' .. :;''-'*
__ _2i.go^^'
	 "i9.87 "
_ __ ^w26.20 _
16.13
22.80
19.20
•• \ '•'''' .,
20.03
24.50
20.53
19.10
TAG SYMBOLS
Determined
to be an
outlier
2.68
-0.59
-0.36
0.31
jO.ll
-JXOI^^ _>v
0.78
-0.12
-3.74
-1.62
^^-'!>^';j
0.94
-0.89
0.79
_;!;°J5TO_
0.02
1.51
-0.09
^1.29
\ -' ,- - L »• /v
,v>,x- ;Y,^\;\"'^;
^0.78 '7^,
;>:Vi \; •,;„/-•'
^.Js^L'lI
aio
_ ^2.25 	
7 -LIT"" 	
1.10
,_-0.12c 	
0.16
1.68
0.33
-0.16
tf = Above
Jl s Below
2.40
-0.87
-0.65
0.02
-0.40
-0.29
0.50
-0.41
-4.02 II
-1.90
s ,^^\VS ^ • v "
0.66
-1.18
0.51
-1.34 	 ^
-0.26
1.22
-0.37
-1.57^ 	
^^;/;X,;
&fe^';«V-
0.50
,'\ ,, ' •
;V- > ;, ,o;c; • v.
J>-20^
yv,,^ .^-..^j^^,,
-6.18
_1.97^ 	
-L45
0.82
-0.41
^T *r~"':;^VV>
-0.12
^ 1.39^_ 	
0.05
-0.44
control limit
control limit

-------
13 / 15 EMSL-LV Performance
Radium-228
Lab
PCm
'ifvs""
**^* •
pp-
PT
PV
PW
PX
ipY^

Q
"'<$B-
Qdr
QU

1 '.QJSk :••
QY
QZ
* R V
'V •• '.'*'•''>..
-.HA?
RC
RD
RF
"RJ2
RM
RN
RV
RW
''iiv" ;
•A JjwSHl.'V.
RZ
S
' Q A"v
'». HA**
sc
SD
SF
SI
SM
SS
ST
SW
; SX>:
"sz
T
TA
TD
TG
TH
TI
Res. 1
19.2 _
y .^v.,,,,.^,,^,- , v,. .,
' "'\ •' "• > ' ' «* t >
*' -^ : --,- \ '
15.6
14.9
9.2

' ' V! ' , c; 'V
•.X\ -.""
24.8
;^ v>> ' ":~>L" -\-
vtj^v™'.-:
7.8

'f":''»s~ 'jJs'K''-*
2L2
15.8
-• v "/'*''* ' "^ -' A
f_ ..^^ •••. *•. <- * ' '""'-vi
^^^\f\}-
24.1
24.2
19.7
^^^f^-j;
13.9
18.7
7.1
18.3
; v- ,5vV- ; "•\\ """-
•• 'Av^ \^ ' o ' ;^C \ '^'
19.8
17.7
;', ",,,,, X'X.. l,,/h -'^,
jf*^'* *-t\*. '-'•!*
20.3
24.6
29.8
30.1
22.0
14.9
21.9
30.6
>•••-
23.3
20.2
23.4
6.3
17.9
25.5
23.2
Res. 2
	 20.2^
., , ™ v-^J.^,^.,™.^ ..„
,V'» />;' ""*• ,-'- 'ft.
V--' -- --'"»•<
22.2
13.5
8.2
X ' ",*;^ %' *
'V"t,!
8.2

(^V^-^ibVv
22.4
17.4
- "• J %' ^ s x ^ % ' -.
*-''%'•• ^^r ' %-s- ,** i
^3^&»^*-^
22.7
20.3
22.6
^S^^J-S
"'"11.7 "
19.5
7.8
19.0
"-;-' c j"vf>^-/> "-
s'v t ^ "C"'/^'' %* '''*•
18.6
17.8
v ,.* -~~!'* ^
,-,; ,-. -,y.-- V<- !
21.4
21.3
31.1
29.3
28.0
21.4
22.4
26.3
' •/ -'-x' >'?• •''
20.3
20.0
23.1
4.7
21.5
27.4
20.9
Res. 3
21.4
"v"^ *V"'.-^*''\
>" , v«\
^-/^> '
16.1
14.2
11.8
~ . '*"-,''; '-'
*\\s v'l"

21.1
;y"^'?":"^
*?V' V\. -
8.1

'--7'- -s.' ^-; v •••
21.8
10.6
, \*'i' -• , "•
"ff ^^ % % -^ '-.
*%r~*;*\ '•"' ;
22.8
18.3
21.4
^"^T./'"
ii.e
20.1
8.2
19.4
:^'v '^^, "*• *
';*'•',. ', J
18.7
17.8
\ *'""' ," "< *'
-V- >-^ \-"'/ - -
20.7
20.0
31.3
28.2
27.8
20.5
21.4
18.8
1 ",' * ^ ', '
24.3
20.4
20.3
4.6
21.0
28.1
26.4
• = No data submitted
0 =
Insufficient
data
x =
Evaluation:
Radium in Water,
Exper. Rng anal
Sigma (R + SR) Average
1.10



3.67
0.70
1.86

••" '; - .*
"• •.-.-. s~-
2.72


0.21

' '',^ "* - *
0.60
3.56


',:, ^"'!"™ ,'!y,!j:^
0.78
3.00
1.46__
'^"V1 * >y'
1.30
0.70
0.56
0.56


0.67
0.06
s^ % o ' " ..' "v

0.56
2.37
0.81
0.95
3.41
3.52
"0.50
5.97

2.08
0.20
1.71
0.95
1.95
1.35
2.76
0.255



0.764
0.162
0.417



0.614
\ ' :

0.046


0.139
0.788



0.162
0.683
0.336
j ""' *"
0.266
0.162
0.127
0.127


0.139
0.012


0.127
0.533
0.174
0.220
0.695
0.753
0.116
1.698

0.463
0.046
0.359
0.197
0.417
0.301
0.637
20.27
** ,* 5 - " .... "",„>„;
* , - - "\ >
, - .. '' -
17.97
14.20
9.73

-\ "•, '"'-.-.-.
' ;"• -. * 'f
21.80
' ' ' * "'';":" ~\
" \- , "• .* •
8.03

-. , "; -•>>•*<
21.80
14.60
- * ; %
"• A ^ •.*•'<
"""'.- '•• "1',-fs"'^ -™',
23.20
20.93
21.23
'"f"' x- -'^T r\'
12.40
19.43
7.70
18.90
> V , ; / '- •' ^

19.03
17.77
v ^ o
v ^ -
20.80
21.97
30.73
29.20
25.93
18.93
21.90
25.23

22.63
20.20
22.27
5.20
20.13
27.00
23.50
TAG SYMBOLS
Determined to
bean
outlier
17-Sep-1993

Normalized deviation
(grand-avg) (known) Tag
0.24
",", ";,*, " ..V?-"^" "'H'
- /.. " ' '- ,-"'.\ •
'-; '\\ ,V ">: \ "-
-0.54
-1.82
-3.34
- !/ ' -
-T-VA'l^

0.76
',,-, ;\ ""\-- "-"
,V"
-3.92

, > •- " s * ;,..
0.76
-1.69

"* /" s '"* ' *" %
*" X% "'i"< ^V V'X " ^ '''•'"''
1.23
0.46
0.57
- • '
";-\7 /-••" -^'

0.48
V^\'" ' -,,,-
' *'"
-4.20 li

: -?'. :' -' -,,, » '
0.48
-1.97
," " „,»:',
\ f ' $ '"'•,''•''"
<* • '"'!-J/ "•--': 7
0.95
0.18
0.28
"> - •'.,,,
-2.72
-0.33
-4.31 Ji
-0.51
*' ' "" %' A ""
"/' ' ''
-0.46
-0.89

. , •
0.14
0.53
3.51 IT
2.99
1.88
-0.50
0.51
1.64
1 ' , *
0.76
-0.07
0.63
-5.16 JJ.
-0.09
2.24
1.05
control limit
control limit

-------
EMSL-LV Performance Evaluation: Radium
Radium-228




Exper.
Lab Res. 1 Res. 2

TL 23.4 26.8
JTN_ 	 ^^.^^JSJJSL.

"~TQ^"" 	 ^-^^"""'goX*''

*»5W;VSi^»p^»«pi^^^ife8i®^S5S*5SSS



^4^5§^^^tt^^Piii^^^^^l^^^^ls
'u - — 	 185
XY^s?^y^y^^^xtyyg^st^igg^gjgs^y^g:>s-Sog^y!gi$-gs^gjgg$?

..,__ ,.,...__.,^__ . ^ .
J^^^^^?^^^^-L-

UN 23.1 24.0
UP 31.0 36.0
UQ 25.0 30.0
Res. 3
ill

•WK^WXW:
waii
unit





15^5
22.8
lilt
18.8
•
SSSSSWi


S^^ijtji^ii':
intm

<»Sais*

i£e
Sigma
$ji§ISi3£$:3|vS


11111^8"
s~'-?;:~^;^p

^KftSitt-s^-WAw:
^;^&-3S:SK:;:!>

HI
^^^W^S
1^^

*!!;*ss;v;ssas
5.80
3.63
Jft^iSS'^ftSSftW
^•WyVSSS-iStt:::-:
•ifS^vXjS&W.WiS
^rS^Xfi^:^
l'!45" 	
SIMP;
;sss«s«.;s;.:i:is:


^£$$$§8$$.

2.96
SSiJJji^iJ;^:. SSSSSis^^VS'Ji^



$BI
•isSSSvSS*



tp*?f«^^f^^§^|^||W^iM|f^l^^^RiiiB^^^

,^,^,,_


W 15.1 15.3
X 13.0 9.9
S3^|^^li^l|i^il^pi|^^^i^i

issWwi?
jimmina





•giwiWSS::^
T-fe^Si'^S

19.0
16.2

32.3
38.0
27.0


21.0
fiJWwSwSfc?
•^SWwS^S-
SjIwfefe&iS
15.9
16.5


Data
Average Tag
5.13 Jl
5.20 11
6.93 U
7.70 11
8.03 li
8.57 U
9.73 U
10.80 U
11.57
12.00
12.40
13.13
14.20
14.60
14.80
15.43
15.70
• = No data submitted
0 = Insufficient data
Lab
GN
TD
EB
RV
QU
JE
PW
BA
FP
FZ
RM
X
PV
QZ
JG
W
U


















:?:wSwft«i.^:S:w:
&J&>:8":!::Sw3v:Ss

!i§illill



™::::?^?!S;^?::^?
siBssssesissss;


Iltlllil


v'^^S^fti:;::^:^;

SiSifK^iswftsfe
s^i-ft-Kvrfi'S.::!:':
1.74
1.16
^B
5.07
3.61
2.52


0.84

>35J»::ivi:S::'S"i'S
>^ysv:-'v.K'L::^!:^
0.42
3.30
jS^fiss^S^v^


Rnganal
(R + SR)

1.588
_,,,^.l!§l.,w..
^^^v:-''!^:^:^'::^^.'::^:;'^^^^^'^'^^^-:?
-.•-:-S:':«'>:-:-M-:-;-;".':-:-::;';':^;:;v;-::;::':':'::^:W:W-:
0.336

•••*'Sr:vx::>:':-y':^W^--^i-i--it:'*':;i:A^:^::^:;:^




zi5§izi
ifisiiill^^^^BiP

0.382
	 _0366^

1.125
0.811
0.579
SiS^^Jf^^^SSSsSS*

^ 0.174^__
^SBliiiiiliil^ff
is^I8^miil|l?sslS
0.093
0.764
^W^^^ili:^:::^:^:'^^^^:;:^

in Water, 17-Sep-1993 14



715

Normalized deviation
Average
^jK^i^i^i^:;^
521*90
18.63

18.77
^ISi^^t


HI
P^lSfe^^:|:i^-^i
^!^:vS:Sfe^-:-:S?|;^::;.xS:^::
15.70


18.37
_ _16.03
^i^i^^^^fii?^^
26.47
35.00
27.33
Wif»t!tlftl

^20.57
Slill^^^ilil
UllsisilSftisiS
15.43
	 13.13


(grand-avg) (known)



i&v$$$&$;8$*\

111^
KSSlyiwS^Sii:
^i?^$iJ5:;?::::;i;
S
^^^W



"a79 051
-0.32 -0.60
'»»ys^»^l^»>S»H^?>>^\*!*%!:'lK*>¥«'>"^»''5#iW

-0.27 -0.55




^IP^ii^i&ii^itg ^?s;!li§i;^-;:i$

-1.31 -1.60

•$$g$$§f!*$ff


«lll













-"0.41 -0.69
^-1.20_^ ^ _ :1.48

2.34 2.06
5.24 4.96
2.64 2.35


0.34 0.06
5^^^g^5^::^^^^^^^^^^^^w
l^^^^li^l^Pl^^^lS^
-1.40 -1.69
-2.18 -2.47
•ii&:i!Sw:a*:K:p^

Tag
vi^€t^i;i^>




SiS:ii

>:vfv:iifr-l&:§:'
gili!»K.W.-.:
^^S£^P
JS^SS^." »•;-•. ;;f
sorted by Laboratory Average
Average

















15.77
16.03
16.13
16.27
16.47
16.93
17.77
17.83
17.97
18.13
18.20
18.27
18.37
18.50
18.60
18.63
18.70

















Tag

















Lab
L
UI
NO
DB
K
JX
S
HE
PT
CS
AZ
AP
UE
HK
EP
TN
BC
Average

















18.77
18.90
18.93
19.03
19.10
19.20
19.20
19.23
19.30
19.33
19.40
19.43
19.53
19.57
19.63
19.63
19.87
TAG SYMBOLS

X
= Determined to be an outlier
Tag

















It = Above control
li s Below control
Lab
TQ
RW
ss
RZ
PB
OF
J
HP
KZ
AI
DT
RN
I
AJ
KH
AW
N
limit
limit

-------
"1
15/15 EMSL-LV Performance Evaluation: Radium in Water, 17-Sep-1993
Radium-228



Data sorted by Laboratory Average
Average Tag
19.97
20.03
20.13
20.20
20.27
20.33
20.47
20.47
20.53
20.57
20.60
20.67
20.67
20.77
20.80
20.93
20.97
20.97

% responding labs
in.
10- -----------


i ' A
-6 -4
Lab Average Tag
BM 20.97
OX 21.00
TG 21.13
T 21.23
PC 21.33
AF 21.37
HL 21.80
EO 21.80
P 21.87
UW 21.87
DZ 21.90
CJ 21.90
BK 21.90
CG 21.93
SC 21.97
RD 22.13
FN 22.27
CA 22.33

Frequency distribution


UI.U— • 	
mill..-.

Lab Average Tag
BO 22.63
MS 22.80
BH 23.20
RF 23.50
AE 24.00
CE 24.50
QY 24.50
Q 25.03
LT 25.23
ID 25.93
TL 26.20
ST 26.47
JY 27.00
DE 27.33
SD 27.47
AK 29.20
TA 30.70 ft
JS 30.73 ft
35.00 ft




••_•_• _ — -
+2 +4
Lab
SZ
NT
RC
TI
KL
OY
C
AL
SW
SM
NG
UN
TH
UQ
GQ
SI
A
SF
UP





+6
Normalized deviation of the mean from the known value
% responding labs

10
_


• = No data submitted
0 s Insufficient data
Frequency distribution
•
•!••! 1
••• •Illlllll
T -2 T 0
Normalized deviation of the mean from



.•-T.-l - •
+2 ' +4
the grand average
TAG SYMBOLS ft a Above control
x s Determined to be an outlier Ji = Below control




+6

limit
limit

-------