This method describes the sample collection and analysis of ethylene glycol dinitrate and nitroglycerin. Samples are collected by drawing a known volume of air through large (100/50-mg sorbent beds) sampling tubes containing Tenax-GC resin. The samples are desorbed with methyl alcohol and analyzed by liquid chromatography with a Thermal Energy Analyzer or an ultraviolet HPLC detector. The purpose of this work was to evaluate air sampling and analytical procedures which permit the simultaneous determination of EGDN and NG. It is necessary to determine the analytes together because the OSHA standard regulates exposure to EGDN and/or NG.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | At least 17 days. |
| Preservatives: | Store at room temperature or refrigerate. |
| Required Preps: | Sampling tube containing Tenax-GC resin, 100mg/50mg, 10cm x 8mmOD |
| Collection Method: | Tenax GC tube: 15L @ 1L/min. |
| Analytical Methodology: | HPLC with Thermal Energy Analyzer and/or Ultraviolet detector. |
| Documentation: | 
043
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Nitroglycerin | C3H5N3O9 |
55-63-0 |
186 |
ng |
| Ethylene Glycol Dinitrate | C2H4N2O6 |
628-96-6 |
280 |
ng |
* 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.