This method is used for the determination of isophorone. The sample is collected on charcoal sorbent tubes, desorbed in carbon disulfide, and analyzed by GC/FID. The working range for this method is 0.35 to 70 ppm (2 to 400 mg/m³) for a 12 L air sample. High humidity will greatly decrease the breakthrough volume. NOTE: This is Method S367 with a different column recommended for analysis.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 7 days from sampling to analysis if kept at 25°C |
| Preservatives: | Store at 25°C. |
| Required Preps: | Solid sorbent tubes: petroleum based charcoal, 100 mg/50 mg, 7cm x 6mm OD x 4mm ID |
| Collection Method: | Solid sorbent tubes: 2 - 25 L @ 0.01 - 1 L/min. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
2508
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Isophorone | C9H14O |
78-59-1 |
0.02 |
mg |
* 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.