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Study on the Enantioselective Degradation of Imazethapyr in Soil by CE

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Abstract

A method was developed for the separation of imazethapyr enantiomers using capillary electrophoresis and large volume injection. Optimized buffer conditions were found using 6% hydroxypropyl-β-cyclodextrin as the chiral selector at pH 11 with an injection time of 20 s (0.5 psi). The limits of detection (LOD, S/N = 3) were 0.22 and 0.23 mg L−1 for the two imazethapyr enantiomers (imazethapyr-I and imazethapyr-II) respectively. The relative standard deviation was less than 5%. This method was successfully used in the study of enantioselective degradation of this herbicide in field soil and the results suggested that imazethapyr-I degraded at a higher rate when compared with imazethapyr-II.

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Authors and Affiliations

  1. State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy Sciences, P.O. Box 2871, 100085, Beijing, China

    Li Han, Baoyuan Guo, Junhe Feng & Jin-Ming Lin

  2. Department of Chemistry, Capital Normal University, 100037, Beijing, China

    Li Han, Junhe Feng & Xiaoming Lu

  3. The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, 100084, Beijing, China

    Jin-Ming Lin

Authors
  1. Li Han
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  2. Baoyuan Guo
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  3. Junhe Feng
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  4. Xiaoming Lu
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  5. Jin-Ming Lin
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Corresponding authors

Correspondence to Baoyuan Guo or Jin-Ming Lin.

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Han, L., Guo, B., Feng, J. et al. Study on the Enantioselective Degradation of Imazethapyr in Soil by CE. Chroma 68, 1071–1073 (2008). https://doi.org/10.1365/s10337-008-0836-7

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  • DOI: https://doi.org/10.1365/s10337-008-0836-7

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