This method describes the sample collection and analysis of carbaryl (sevin). Samples are collected by drawing known volumes of air through OSHA versatile sampler (OVS-2) tubes, containing a glass fiber filter and two sections of XAD-2 adsorbent. Samples are extracted with acetonitrile and analyzed by HPLC using a UV detector. The OVS-2 is a specially prepared glass tube containing a glass fiber filter and XAD-2 resin which will collect both vapor and aerosol.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 16 days. |
| Preservatives: | Store at room temperature. |
| Required Preps: | OVS-2 tubes: 13 mmOD glass tubes that taper to 6mmOD, packed with a 270mg/140mg of cleaned XAD-2 and a 13-mm diameter glass fiber filter. The glass fiber filter is held next to the sampling section by a polytetrafluoroethylene (PTFE) retainer. |
| Collection Method: | OVS-2 tube with XAD-2 resin and glass fiber filter: 60 L at 1.0 L/min. |
| Analytical Methodology: | HPLC/UV |
| Documentation: | 
063
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Carbaryl (Sevin) | C12H11NO2 |
63-25-2 |
1.66 |
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.