This method is for the determination of acrylamide. The sample is collected using a glass fiber filter followed by a silica gel tube. Immediately after sample collection the filter and gaskets, within the cassette used to hold the filter, are extracted in the field with exactly 1 mL of methanol. This step is performed to avoid sublimation of any acrylamide particulate on the filter. The silica gel tube is extracted with methanol at the laboratory. Both the filter and tube are analyzed by suing GC/NPD (nitrogen phosphorus detector).
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Phosphine recoveries were above 89% after 15 days stored at both ambient and refrigerated (5°C) temperatures. |
| Preservatives: | Put glass fiber filter and gaskets into 1 mL of methanol after sampling. |
| Required Preps: | 13 mm glass fiber filter (SKC 225-16) with a silica gel tube, 150 mg/75 mg (SKC 226-10) |
| Collection Method: | The method recommends a flow rate of 1 L/min with a 120L sample collection volume. |
| Analytical Methodology: | GC/NPD |
| Documentation: | 
021
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Acrylamide | C3H5NO |
79-06-1 |
0.45 |
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.