Determination of epichlorohydrin in workplace air by gas chromatograph-electron capture detector
Wan, X.; Zhao, Z.; Qiu, J.; Guo, Y.; Wu, J.
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 33(4): 307-309
2015
ISSN/ISBN: 1001-9391 PMID: 26506788 Document Number: 681821
To develop a method for determining epichlorohydrin in the workplace air by gas chromatograph-electron capture detector (GC-ECD). Epichlorohydrin in the workplace air was collected by activated charcoal tubes, desorbed using acetone, and analyzed by GC-ECD. A 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. This 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.