This method describes the sample collection and analysis of 2-Methoxyethanol, 2-methoxyethyl, 2-ethoxyethanol, and 2-ethoxyethylacetate. Samples are collected by drawing air through standard size coconut shell charcoal tubes. Samples are desorbed with 95/5 (v/v) methylene chloride/methanol and analyzed by gas chromatography using a flame ionization detector.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | Recovery remained above 85% after 15 days of storage at ambient temperature (22°C) or refrigeration at 0°C. |
| Preservatives: | Keep refrigerated or at ambient temperature. |
| Required Preps: | Solid sorbent sampling tubes containing coconut shell charcoal. Each tube consists of two sections of charcoal separated by a urethane foam plug. The front section contains 100 mg of charcoal and the back section, 50 mg; 7cm x 6mm OD x 4mm ID. |
| Collection Method: | Solid sorbent sampling tubes; 48L @ 0.1L/min for TWA samples; 15L @ 1.0L/min for STEL samples. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
079
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| 2-Methoxyethanol | C3H8O2 |
109-86-4 |
1 |
µg |
| Methyl Cellosolve Acetate | C5H10O3 |
110-49-6 |
0.4 |
µg |
| 2-Ethoxyethanol | C4H10O2 |
110-80-5 |
0.37 |
µg |
| 2-Ethoxyethyl Acetate | C6H12O3 |
111-15-9 |
0.31 |
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.