This method is for the determination of glycols. The sample is collected on an XAD-7 OVS tube. After sample collection, the tube is desorbed with methanol and analyzed by GC/FID (flame ionization detector).
Hexylene glycol can be determined by this method, however, no sampling or analytical evaluation has been conducted.
NOTE: This method replaces NMAM 5500 which was found deficient in the collection of ethylene glycol in aerosol form and ethylene glycol was not separated from propylene glycol by the chromatography.
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| Hold Times, Preservatives, Preps, Collection, Analytical & Documentation | |
|---|---|
| Holding Time: | The method states the samples are stable for 28 days if kept at 5°C. Ethylene glycol is stable for 14 days if kept at 5°C. |
| Preservatives: | Keep the samples at 5°C. |
| Required Preps: | XAD-7 OVS tube, 200mg/100mg (ORBO 34) |
| Collection Method: | The method recommends a flow rate of 0.5 - 2 L/min. with a collection volume of 5 - 60L. |
| Analytical Methodology: | GC/FID |
| Documentation: | 
5523
|
| Analyte | Formula | CAS Number | Detection Limit | |
|---|---|---|---|---|
| Ethylene Glycol | C2H6O2 |
107-21-1 |
7 |
µg |
| 1,3-Butanediol | C4H10O2 |
107-88-0 |
616 |
µg |
| Diethylene glycol | C4H10O3 |
111-46-6 |
14 |
µg |
| Triethylene glycol | C6H14O4 |
112-27-6 |
14 |
µg |
| Tetraethylene Glycol | C8H18O5 |
112-60-7 |
14 |
µg |
| Propylene glycol | C3H8O2 |
57-55-6 |
6 |
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.