This method is used for the determination of polychlorobenzene. The sample is collected on XAD-2 sorbent tubes, desorbed in hexane, and detected by GC with a 63Ni electron capture detector. The working range is 0.002 to greater than 30 mg/m³ for a 10L air sample. The linear range of the detector is limited, but samples are diluted prior to measurement. NOTE: This method revises P&CAM 343.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 13 days @ 25 °C. |
| Preservatives: | 25 °C |
| Required Preps: | Filter and solid sorbent tube (PTFE and XAD-2 100mg/50mg) 13-mm filter, 5-µm pore size. Tube: 7cm x 6.4mm OD x 4 mm ID |
| Collection Method: | Filter and solid sorbent tube 3L to 12 L @ 0.01 to 0.2L/min. |
| Analytical Methodology: | GC, 63 Ni ECD |
| Documentation: | 
5517
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| 1,2,4-Trichlorobenzene | C6H3Cl3 |
120-82-1 |
0.01 |
µg/mL in hexane |
| Pentachlorobenzene | C6HCl5 |
608-93-5 |
0.01 |
µg/mL in hexane |
| 1,2,4,5-Tetrachlorobenzene | C6H2Cl4 |
95-94-3 |
0.01 |
µg/mL in hexane |
* 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.