Citation: ZHU Jing, LI Mingxin, WANG Qian, REN Lin, Zheng Bo, YONG Li, ZOU Xiaoli. Solidification of floating organic drop dispersive liquid-liquid microextraction combined with capillary electrophoresis for the determination of sulfonylurea herbicides in water[J]. Chinese Journal of Chromatography, ;2016, 34(11): 1120-1125. doi: 10.3724/SP.J.1123.2016.06012 shu

Solidification of floating organic drop dispersive liquid-liquid microextraction combined with capillary electrophoresis for the determination of sulfonylurea herbicides in water

ZHU Jing ^1, ,
LI Mingxin ¹ ,
WANG Qian ¹ ,
REN Lin ² ,
Zheng Bo ¹ ,
YONG Li ² ,
ZOU Xiaoli ¹

1.
Department of Sanitary Technology, West China School of Public Health, Sichuan University, Chengdu 610041, China;
2.
Center for Disease Control and Prevention of Sichuan Province, Chengdu 610041, China

Received Date: 8 June 2016

Fund Project: Health and Family Planning Commission Project of Sichuan Province (No. 14H1236).

A novel method of solidification of floating organic drop dispersive liquid-liquid microextraction for the simultaneous determination of sulfonylurea herbicides in water samples by capillary electrophoresis was established. Sulfonylurea herbicides in water samples were extracted by solidification of floating organic drop dispersive liquid-liquid microextraction using dodecanol as extractant and methanol as dispersive solvent, and were determined with capillary electrophoresis. Nine kinds of sulfonylurea herbicides such as tribenuron-methyl, pyrazosulfuron-methyl, bensulfuron-methyl and so on were detected by this method. The good linearities were obtained in the range of 10.0-1000 μg/L. The correlation coefficiencies were not less than 0.992. The method detection limits (MDLs) ranged from 2.40 to 7.50 μg/L. The relative standard derivations (RSDs) of the method were 6.55%-13.9%. The method was applied for the determination of water samples and showed satisfactory results. The spiked recoveries ranged from 82.0% to 104%. The method is quick, sensitive and suitable for the batch analysis of sulfonylurea herbicides in water samples.
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