Method 79

2-Methoxyethanol, 2-Methoxyethyl, 2-Ethoxyethanol, 2-Ethoxyethylacetate by GC/FID


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.


(OSHA)

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Method Data

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 List*

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.