This method is for the determination of bromoxynil and bromoxynil octanoate. The sample is collected on PTFE membrane filters, and extracted with 3 mL acetonitrile for 60 minutes, followed by HPLC analysis with ultraviolet detection. The working range is 0.02 to 0.3 mg/m³ for a 100-L air sample. This method permits the simultaneous determination of both analytes.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 25 days @ 4 °C in the dark. |
| Preservatives: | Keep refrigerated and store in the dark. |
| Required Preps: | PTFE membrane filter, 2-µm |
| Collection Method: | PTFE membrane filter: 2L - 400L @ 1-3 L/min. |
| Analytical Methodology: | HPLC/UV |
| Documentation: | 
5010
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Bromoxynil | C7H3Br2NO |
1689-84-5 |
0.6 |
µg |
| Bromoxynil Octanoate, Solid | 1689-99-2 |
0.3 |
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.