This method is for the collection and analysis of isopropyl alcohol. Samples are collected by drawing a known volume of air through two 8-mm o.d. (6-mm i.d.) Anasorb® 747 tubes in series. The front tube contains 400 mg of adsorbent, and the back tube 200 mg. Samples are desorbed with a 60/40 N,N-dimethylformamide/carbon disulfide solution and analyzed by GC using a flame ionization detector (FID). The air sampler must be separated into its component sampling tubes as soon as possible after sampling. This will prevent post-sampling migration.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 19 days. |
| Preservatives: | Store at room temperature. |
| Required Preps: | Two Anasorb® 747 sampling tubes in series: 400mg/200mg, 11cm x 8mmOD x 6mmID. |
| Collection Method: | Anasorb tubes: 18 L at 0.05 to 0.2 L/min |
| Analytical Methodology: | GC/FID |
| Documentation: | 
109
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Isopropyl alcohol | C3H8O |
67-63-0 |
0.587 |
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.