This method is for the collection and analysis of acetic anhydride from workplace air samples. The sample is collected on a glass fiber filters impregnated with 2.5 mg of 1-(2-pyridyl)piperazine (1-2PP). After collection the sample is extracted with 50:50 (v/v) 2-propanol/toluene and analyzed by GC/NPD (nitrogen-phosphorus detector).
Ketones and actyl chloride can cause interferences with the method.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Per the method, recoveries of spiked samples stored at room temperature were above 72% when stored at ambient temperature for 15 days and above 84% when stored at refrigerated temperatures for 15 days. |
| Preservatives: | It's recommended to store samples at refrigerated temperatures. |
| Required Preps: | Two glass fiber filters each impregnated with 2.5 mg of 1-2PP, SKC 225-9009. |
| Collection Method: | The method recommends at a 0.05 L/min. flow rate and a 0.75 L sample collection volume. |
| Analytical Methodology: | GC/NPD |
| Documentation: | 
082
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Acetic acid anhydride | C4H6O3 |
108-24-7 |
0.51 |
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.