This method describes the sample collection and analysis of vinyl chloride. Air samples are collected by drawing known volumes of air through glass sampling tubes containing Carbosieve S-III (carbon based molecular sieve) adsorbent. Samples are desorbed with a mixture of 99:1 (v/v) carbon disulfide (CS2)/dimethylformamide (DMF) in the presence of magnesium sulfate. Samples are analyzed by GC using a flame ionization detector. Samples are to be stored at reduced temperature after they have been received at the analytical laboratory.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 15 days. |
| Preservatives: | Store at 4°C. |
| Required Preps: | Samples are collected on sampling tubes packed with two sections of 60/80 mesh Carbosieve S-III ; 4.5cm x 6mmOD x 4mmID with 130mg/65mg adsorbent. |
| Collection Method: | Carbon based molecular sieve: 3 L at 0.05 L/min. |
| Analytical Methodology: | GC/FID. |
| Documentation: | 
075
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Vinyl chloride | C2H3Cl |
75-01-4 |
0.152 |
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.