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Microchimica Acta

, Volume 173, Issue 3–4, pp 477–483 | Cite as

Ultratrace determination of carbamate pesticides in water samples by temperature controlled ionic liquid dispersive liquid phase microextraction combined with high performance liquid phase chromatography

  • Qingxiang Zhou
  • Long Pang
  • Junping Xiao
Original Paper

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.

Figure

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.

Keywords

1-Hexyl-3-methylimidazolium hexafluorophosphate Carbamate pesticides Temperature controlled ionic liquid dispersive liquid phase microextraction High performance liquid chromatography 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (20877022) and the Personal Innovation Foundation of Universities in Henan Province ([2005]126).

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.State Laboratory of Petroeum Resource and Prospecting, College of GeosciencesChina University of PetroleumBeijingChina
  2. 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 EducationHenan Normal UniversityXinxiangPeople’s Republic of China
  3. 3.Department of ChemistryUniversity of Science and Technology BeijingBeijingChina

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