This method describes the sample collection and analysis of chloroacetaldehyde. Air samples are collected by drawing known volumes of air through glass sampling tubes, each containing 520 mg of silica gel adsorbent in the front section and 260 mg in the backup section. The samples are desorbed with acetonitrile and analyzed by GC using an electron capture detector. Store collected samples in a freezer upon receipt at the laboratory.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 17 days. |
| Preservatives: | Keep samples frozen and in the dark. |
| Required Preps: | Samples are collected on glass sampling tubes each packed with 520mg/260mg of 20/40 mesh silica gel: 11cm x 8mmOD x 6mmID. |
| Collection Method: | Silica gel sorbent tubes: 7.5 L at 0.5 L/min. |
| Analytical Methodology: | GC/ECD. |
| Documentation: | 
076
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Chloroacetaldehyde | C2H3ClO |
107-20-0 |
0.513 |
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.