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Ultratrace determination of carbamate pesticides in water samples by temperature controlled ionic liquid dispersive liquid phase microextraction combined with high performance liquid phase chromatography |
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| Authors: | Qingxiang Zhou Long Pang Junping Xiao |
| Institution: | 1. State Laboratory of Petroeum Resource and Prospecting, College of Geosciences, China University of Petroleum, Beijing Capmus(CUP), Beijing, 102249, China 2. School of Chemistry and Environmental Sciences, Henan Key Laboratory for Environmental pollution Control, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, 453007, People’s Republic of China 3. Department of Chemistry, University of Science and Technology Beijing, Beijing, 100083, China |
| Abstract: | A simple and sensitive method was developed for the determination of three carbamate pesticides in water samples. It is based on temperature controlled ionic liquid dispersive liquid phase microextraction combined with high-performance liquid chromatography. The ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate was used as the extractant, and the factors affecting the extraction were investigated in detail. The detection limits obtained for isoprocarb, diethofencarb and fenothiocarb are 0.91, 0.45, and 1.40 μgL-1, respectively, and the precisions are in the range between 1.0 and 1.8% (n?=?6). The method was validated with environmental water samples and the results indicate that it represents a viable alternative to existing methods. Temperature controlled ionic liquid dispersive liquid phase microextraction was developed for the enriching three carbamate pesticides. 1-Hexyl-3-methylimidazolium hexafluorophosphate was used as the extractant. The detection limits for isoprocarb, diethofencarb, fenothiocarb are 0.91, 0.45, 1.40 μgL-1. Real-world environmental water samples analysis indicated that it was a viable alternative to existing methods. |
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