This method is for the collection and analysis of acrylonitrile from source emission samples. The sample is collected using a sampling train that consisting of a probe, midget impinger, and charcoal tube. The impinger is filled with 25 mL of methanol. The typical sampling period is one hour. After sampling the impinger contents are transferred to a bottle and the impinger is rinsed with methanol. The rinses are added to the impinger collected impinger contents. The impinger contents/rinses and charcoal tube are shipped cold to the lab for analysis.
Duplicate aliquots of the impinger contents and rinses are analyzed by GC/NPD (gas chromatography/nitrogen phosphorus detector). The charcoal tube is desorbed with methanol and 2% formic acid and analyzed by GC/NPD.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | None specified in the method. |
| Preservatives: | Keep samples cold after collection and during shipment. |
| Required Preps: | Glass bottle for impinger rinses |
| Collection Method: | CTA-008 sampling train |
| Analytical Methodology: | GC/NPD |
| Documentation: | 
CTA-008
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Acrylonitrile | C3H3N |
107-13-1 |
||
* 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.