Polynuclear Aromatic Hydrocarbons (PAHs) SW-846 Method 8310


POLYNUCLEAR AROMATIC HYDROCARBONS (PAHs)
SW-846 Method 8310
Table 1A. Summary of Holding Times and Preservation for Carbamate and Urea
Pesticides by High Performance Liquid Chromatography
Analytical
Technical and
Preservation
Parameter 1
Contract Holding


Times

Polynuclear
Technical for
Cool to 4°C ±2°C;
Aromatic
Extraction: 7 davs
Store in TFE-
Hydrocarbons
from collection;
fluorocarbon-sealed
(PAHs)
Contract for
bottles away from the

Extraction: 5 davs
light

from receipt at


laboratory


Technical and


Contract for


Analysis: 40 davs


from extraction

Polynuclear
Technical for
Cool to 4°C ±2°C;
Aromatic
Extraction: 14 davs
Store away from the
Hydrocarbons
from collection;
light
(PAHs)
Contract for


Extraction: 10 davs


from receipt at


laboratory


Technical and


Contract for


Analysis: 40 davs


from extraction

1 Individual target compounds are listed in Table IB.
Data Calculations and Reporting Units:
Calculate the sample results using calibration factors determined according to
Sections 7.4.2 and 7.8.1 of SW-846 Method 8000A.
Report water sample results in concentration units of micrograms per liter
(/ig/L) . Report soil sample results on a dry-weight basis in micrograms per
kilogram (/ig/kg) .
For rounding results, adhere to the following rules:
a)If	the number following those to be retained is less than 5, round down;
b)If	the number following those to be retained is greater than 5, round up; or
c)If	the number following the last digit to be retained is equal to 5, round
down if the digit is even, or round up if the digit is odd.
All records of analysis and calculations must be legible and sufficient to
recalculate all sample concentrations and QC results. Include an example
calculation in the data package.
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TABLE IB. Target Compound. List, CAS Numbers, and Contract Required
Quantiation Limits for SW-846 Method 8310
COMPOUND
CAS No.
CRQL Water
pg/L
CRQL Soil
pg/kg
Acenaphthene
83-32-9
2
1340
Acenaphthylene
208-96-8
2
1340
Anthracene
120-12-7
0 .1
67
Benzo(a)anthracene
56-55-3
0 .1
67
Benzo(a)pyrene
50-32-8
0 .1
67
Benzo(b)fluoranthene
205-99-2
0 .1
67
Benzo(g,h,i)perylene
191-24-2
0 .1
67
Benzo(k)fluoranthene
207-08-9
0 .1
67
Chrysene
218-01-9
0 .1
67
Dibenzo(a,h)anthracene
53-70-3
0 .1
67
Fluoranthene
206-44-0
0 .1
67
Fluorene
86-73-7
2
1340
Indeno(1,2,3-cd)pyrene
193-39-5
0 .1
67
Naphthalene
91-20-3
2
1340
Phenanthrene
85-01-8
0 .1
67
Pyrene
129-00-0
0 .1
67
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Table 2. Summary of Calibration Procedures for Polynuclear Aromatic Hydrocarbons by SW-846 Method 8310
Calibration Element
Frequency
Acceptance
Criteria
Corrective Action
Initial Calibration
(minimum blank + 5
points for each
analyte) (ICAL) a' b' c
Initially; whenever
required, due to
failure of CCV
RSD for CFs <20%
1.	Terminate analysis
2.	Re-calibrate and verify before
sample analysis
Continuing
Calibration
Verification (CCV) at
midpoint of ICAL
Beginning of each
day, after every 10
samples, and end of
run
%D between CF of
CCV and avg CFs
from ICAL <15%
1.	Re-calibrate and verify
2.	Re-analyze samples back to last
compliant CCV
Retention time
evaluation forCCV
standards
Each analysis of CCV
standards
±3 x the SD of
the avg ICAL RT
for each analyte
1.	Re-calibrate and verify
2.	Re-analyze samples back to last
compliant CCV
a The ICAL low standard must be above but near the CRQL. The low ICAL standard must have a signal to noise
ratio >5:1. If this requirement cannot be met, the laboratory must submit a MDL study as part of the data
package.
b ICAL and and continuing CAL standards must contain all target analytes listed in Table IB.
c Report the retention time window for each analyte. Determine retention time windows as ±3 x the standard
deviation of the average initial calibration retention time for each analyte.
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Table 3.
Summary of Internal Quality Control Procedures for Polynuclear Aromatic Hydrocarbons by SW-846
Method 8310
QC Element
Frequency
Acceptance
Criteria
Corrective Action
Method Blank (MB)
One per Batch or SDG
a (1 per 20 samples
minimum)
< CRQL for each
compound
1. Investigate source of contamination and
document
2. All samples processed with a method
blank that is out of control must be re-
extracted and re-analyzed
Surrogate b
Every standard,
sample, and method
blank at 10 times
CRQL
65-125% of
expected value
1. Re-analyze all samples with non-
compliant surrogate recoveries
Matrix Sike and
Matrix Spike
Duplicate
(MS/MSD) c
One MS/MSD set per
batch or SDG (1
MS/MSD set per 20
samples minimum)
75-125% of
expected value;
<30 RPD between MS
and MSD
1. Report in case narrative
QC Check Solution
One per Batch or SDG
See Table 3 of
SW-846 Method 8310
1. Repeat preparation and analysis of QC
check solution.
Cleanup Standard
(midpoint
concentration)
When column cleanup
is used
>85% Recovery
1. Investigate problem, determine cause,
and document.
2. Do not analyze samples until cleanup
standard is compliant.
a SDG - Sample Delivery Group - each case of field samples received; or each 20 field samples within a case;
or each 14 calendar day period during which field samples in a case are received.
b The compound decafluorobiphenyl is recommended.
c MS/MSD spike should contain a minimum of three PAH compounds chosen from the compound list in Table IB.
Dilute and re-analyze samples with one or more analytes at concentrations exceeding the range of the
calibration curve. Results for such re-analyses should fall within the mid-range of the calibration curve.
Report results and submit documentation for both analyses.
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