Method 8082A is for the determination of polychlorinated biphenyls (PCBs) as Aroclors or as individual PCB congeners from solid matrices. Quantitation of PCBs as Aroclors is appropriate for many regulatory compliance determinations, but is particularly difficult when the Aroclors have been weathered by long exposure in the environment. Therefore, this method provides procedures for the determination of selected individual PCB congeners. Please note, most laboratories have implemented Method 8082A as an assay for Aroclors only and will determine PCB congeners or total concentrations using other methods, typically with GC/MS as the analytical technique. Please review each laboratory's target analyte list carefully to ensure that the chosen method will meet your project requirements.
The sample is extracted with hexane-acetone (1:1) or methylene chloride-acetone (1:1) using Method 3540 (Soxhlet), Method 3541 (automated Soxhlet), Method 3545 (pressurized fluid extraction), Method 3546 (microwave extraction), Method 3550 (ultrasonic extraction), Method 3562 (supercritical fluid extraction), or other appropriate technique or solvents. A sequential sulfuric acid/potassium permanganate cleanup (Method 3665) can be performed if needed to remove single component organochlorine or organophosphorus pesticides if necessary. The extract is analyzed using GC/ECD (electron capture detector) or GC/ELCD (electrolytic conductivity detector). Any positive detects need to be confirmed by analysis on a second column. GC/MS is acceptable as a confirmation technique if the concentration of the compound is high enough for detection by this tecnique.
NOTE: This method is an update of and replaces Method 8082.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 14 days from sample collection to extraction and 40 days from extraction to analysis |
| Preservatives: | Cool samples to ≤ 6°C. |
| Required Preps: | 4 oz Amber glass bottle with Teflon-lined lid |
| Collection Method: | Grab sampling, SW-846 Chapter 4, Section 4.1.2 |
| Analytical Methodology: | GC/ECD |
| Documentation: | 
8082A
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Aroclor-1260 | 11096-82-5 |
70 |
µg/kg | |
| Aroclor-1254 | 11097-69-1 |
70 |
µg/kg | |
| Aroclor-1221 | 11104-28-2 |
70 |
µg/kg | |
| Aroclor-1232 | 11141-16-5 |
70 |
µg/kg | |
| Aroclor-1248 | 12672-29-6 |
70 |
µg/kg | |
| Aroclor-1016 | 12674-11-2 |
70 |
µg/kg | |
| 2,3-Dichlorobiphenyl (5) | C12H8Cl2 |
16605-91-7 |
0.8 |
µg/kg |
| 2,4',5-Trichlorobiphenyl (31) | C12H7Cl3 |
16606-02-3 |
0.8 |
µg/kg |
| 2-Chlorobiphenyl (1) | C12H9Cl |
2051-60-7 |
0.8 |
µg/kg |
| 2,3',4,4'-Tetrachlorobiphenyl (66) | C12H6Cl4 |
32598-10-0 |
0.8 |
µg/kg |
| 2,2',4,4',5,5'-Hexachlorobiphenyl (153) | C12H4Cl6 |
35065-27-1 |
0.8 |
µg/kg |
| Hexachlorobiphenyl (138) | C12H4Cl6 |
35065-28-2 |
0.8 |
µg/kg |
| Heptachlorobiphenyl (180) | C12H3Cl7 |
35065-29-3 |
0.8 |
µg/kg |
| Heptachlorobiphenyl (170) | C12H3Cl7 |
35065-30-6 |
0.8 |
µg/kg |
| 2,2',5,5'-Tetrachlorobiphenyl (52) | C12H6Cl4 |
35693-99-3 |
0.8 |
µg/kg |
| 2,2',5-Trichlorobiphenyl (18) | C12H7Cl3 |
37680-65-2 |
0.8 |
µg/kg |
| 2,2',4,5,5'-Pentachlorobiphenyl (101) | C12H5Cl5 |
37680-73-2 |
0.8 |
µg/kg |
| Pentachlorobiphenyl (87) | C12H5Cl5 |
38380-02-8 |
0.8 |
µg/kg |
| 2,3,3',4',6-Pentachlorobiphenyl (110) | C12H5Cl5 |
38380-03-9 |
0.8 |
µg/kg |
| Nonachlorobiphenyl (206) | C12HCl9 |
40186-72-9 |
0.8 |
µg/kg |
| Tetrachlorobiphenyl (44) | C12H6Cl4 |
41464-39-5 |
0.8 |
µg/kg |
| 2,2',3,5,5',6-Hexachlorobiphenyl (151) | C12H4Cl6 |
52663-63-5 |
0.8 |
µg/kg |
| Heptachlorobiphenyl (187) | C12H3Cl7 |
52663-68-0 |
0.8 |
µg/kg |
| Heptachlorobiphenyl (183) | C12H3Cl7 |
52663-69-1 |
0.8 |
µg/kg |
| 2,2',3,4,5,5'-Hexachlorobiphenyl (141) | C12H4Cl6 |
52712-04-6 |
0.8 |
µg/kg |
| Aroclor-1242 | 53469-21-9 |
70 |
µg/kg | |
* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.