This method is for the determination of triorthocresyl phosphate. The sample is collected on mixed cellulose ester membrane filters, extracted in 10mL diethyl ether, followed by GC analysis with a phosphorous flame photometric detector. The working range of this method is 0.002 to 2 mg/m³ for a 100-L air sample. This method may be adapted to other phosphates of relatively low volatility with appropriate changes in chromatographic conditions. Note: This revises Method S209.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Not determined. |
| Preservatives: | None noted in method. |
| Required Preps: | Mixed cellulose ester membrane filter; 0.8-µm. |
| Collection Method: | Mixed cellulose ester membrane filter: 2L - 100L @ 1-3L/min. |
| Analytical Methodology: | GC/FPD |
| Documentation: | 
5037
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Tri-o-cresyl phosphate (TOCP) | C21H21O4P |
78-30-8 |
0.05 |
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.