This method is used for the determination of pyrethum. The sample is collected on glass fiber filters, desorbed with acetonitrile, and analyzed by HPLC with UV detection. The working range is 0.5 to 10 mg/m³ for a 200 L air sample. Mass spectrometry or gas-liquid chromatography (for bulk samples) with electron-capture detection may be needed for confirmation. NOTE: This method is S298 in a revised format.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 1 week. |
| Preservatives: | 25 °C |
| Required Preps: | Glass fiber filter, 37-mm |
| Collection Method: | Filter; 20 to 400 L @ 1 to 4 L/min |
| Analytical Methodology: | HPLC-UV |
| Documentation: | 
5008
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Pyrethrum | 8003-34-7 |
0.01 |
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.