This method is for the determination of benzene. Air samples are collected on activated charcoal, desorbed with carbon disulfide, and analyzed by gas chromatography using a flame ionization detector.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The recovery of analyte from the collection medium must be 75% or greater. Recoveries of greater than 92% were obtained from samples stored for up to 15 days at both ambient and refrigerated temperatures. |
| Preservatives: | Store at ambient or refrigerated temperatures. |
| Required Preps: | Solid sorbent tubes: coconut shell charcoal, 100 mg/50 mg, 7cm x 6mm OD x 4mm ID |
| Collection Method: | Solid sorbent tubes: 10 L at 0.2 L/min. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
012
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Benzene | C6H6 |
71-43-2 |
1.28 |
ng |
* 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.