Determination of epichlorohydrin in workplace air by gas chromatograph-electron capture detector.
- Author:
Xiang WAN
;
Zhonglin ZHAO
;
Jianguo QIU
;
Ying GUO
;
Jiang WU
- Publication Type:Journal Article
- MeSH: Air Pollutants, Occupational; analysis; Charcoal; Chromatography, Gas; Epichlorohydrin; analysis; Workplace
- From: Chinese Journal of Industrial Hygiene and Occupational Diseases 2015;33(4):307-309
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo develop a method for determining epichlorohydrin in the workplace air by gas chromatograph-electron capture detector (GC-ECD).
METHODSEpichlorohydrin in the workplace air was collected by activated charcoal tubes, desorbed using acetone, and analyzed by GC-ECD.
RESULTSA good linearity was obtained in the range of 1.0-50 µg/mL (r=0.999 7). The detection limit was 0.012 µg/ml, while the recovery rate was 88.1% and relative standard deviation ranged from 1.11% to 3.57%. The samples could be stored for seven days at room temperature.
CONCLUSIONThis method effectively eliminates the interferences of alkanes on determination of epichlorohydrin and improves the sensitivity by 1 to 2 orders of magnitude, which can solve the problem of detection limit above standard in GBZ/T 160.58-2004.