This method is used for the determination of acetone cyanohydrin. The sample is collected on Porapak QS sorbent tubes, desorbed in ethyl acetate followed by a 1 hour ultrasonication, and analyzed using GC-FID. The working range is 0.1 to 4.8 ppm (0.33 to 17mg/m³) for a 3 L air sample. Co-adsorbed water vapor will decompose the analyte unless the samples are refrigerated immediately after collection. NOTE: This method was originally designated P&CAM 340.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least five days from sampling to analysis if stored at 0°C immediately following collection |
| Preservatives: | Store at 0°C. |
| Required Preps: | Solid sorbent tube: Porapak QS, 100 mg/50 mg; 7cm x 6mm OD x 4mm ID |
| Collection Method: | Solid sorbent tube: 0.3 - 12 L @ 0.2 L/min. |
| Analytical Methodology: | GC/NP (Thermionic) Detector |
| Documentation: | 
2506
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Acetone Cyanohydrin | C4H7NO |
75-86-5 |
0.1 |
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.