This method is for the collection and analysis of polychlorinated biphenyls (PCBs). The sample is collected on a glass fiber filter followed by a Florisil tube. After collection the filter and front section of the tube are desorbed with 5mL hexane and the back section of the tube is desorbed with 2 mL hexane. The sample is analyzed by GC/ECD.
The working range of the method is 0.01 to 10 mg/m³ for a 40 L air sample.
NOTE: This method revises Methods S120 and P&CAM 244. Methods S121 and P&CAM 253 for PCBs have not been revised.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | None established by the method for the filters. 2 months for the florisil tubes. |
| Preservatives: | None specified in the method. |
| Required Preps: | 13mm glass fiber filter (SKC 225-16), Florisil, 100mg/50mg (SKC 226-39) |
| Collection Method: | The method recommends a 0.2 L/min. flow rate and a 1 - 50 L sample collection volume. |
| Analytical Methodology: | GC/ECD |
| Documentation: | 
5503
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Aroclor-1254 | 11097-69-1 |
0.03 |
µg | |
| Aroclor-1016 | 12674-11-2 |
0.03 |
µg | |
| Polychlorinated Biphenyls | 1336-36-3 |
0.03 |
µg | |
| Monochlorobiphenyls, Total | 27323-18-8 |
0.03 |
µg | |
| Aroclor-1242 | 53469-21-9 |
0.03 |
µg | |
* 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.