[Determination of epichlorohydrin in workplace air by gas chromatograph-electron capture detector].
OBJECTIVE
To develop a method for determining epichlorohydrin in the workplace air by gas chromatograph-electron capture detector (GC-ECD).


METHODS
Epichlorohydrin in the workplace air was collected by activated charcoal tubes, desorbed using acetone, and analyzed by GC-ECD.


RESULTS
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.


CONCLUSIONS
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.
Xiang
X
Wan
Zhonglin
Z
Zhao
Jianguo
J
Qiu
Ying
Y
Guo
Jiang
J
Wu
D000395:Air Pollutants, Occupational / Q000032:analysis*; D002606:Charcoal; D002849:Chromatography, Gas; D004811:Epichlorohydrin / Q000032:analysis*; D017132:Workplace
D000395:Air Pollutants, Occupational; D004811:Epichlorohydrin; D002606:Charcoal