This method is for the collection and analysis of dibutyl phthalate and bis(2-ethylhexyl)phthalate. The sample is collected on a 0.8 micron cellulose ester membrane filter. After collection, the filter is dissolved in 2mL of carbon disulfide and analyzed by GC/FID (flame ionization detector).
The working range of the method is 1 to 20 mg/m³ for a 50 L air sample.
NOTE: This method combines and replaces Methods S33 and S40.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | 6 days from sampling to analysis if samples kept at 25°C for dibutyl phthalate. No holding time specified for bis(2-ethylhexyl)phthalate |
| Preservatives: | Keep samples at 25°C. |
| Required Preps: | 37mm Cellulose ester membrane filter (SKC 225-3-01) |
| Collection Method: | The method recommends a 1 - 3 L/min. flow rate and a 10 - 200L sample collection volume. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
5020
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| bis-(2-Ethylhexyl)phthalate | C24H38O4 |
117-81-7 |
0.01 |
mg |
| Di-n-butylphthalate | C16H22O4 |
84-74-2 |
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.