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Simultaneous Determination of Omethoate and Dichlorvos by Capillary Electrophoresis


A capillary electrophoresis method has been developed for the analysis of omethoate and dichlorvos. Response surface methodology (RSM) was used to optimize the separate conditions for simultaneous detection of omethoate and dichlorvos. The results indicated that the optimal conditions for omethoate and dichlorvos determination were; pH 7.64, SDS concentration 67.5 mM, separation voltage 19.0 KV. Quantitative linear ranges were 1.0–300 μg/mL for omethoate and dichlorvos with correlation of 0.9967 and 0.9965, respectively. The limits of detection were 0.046 μg/mL and 0.031 μg/mL for omethoate and dichlorvos, with relative standard deviations (R.S.D.) <3.6%. The value of recoveries for omethoate and dichlorvos were arranged from 94.1% to 106.0%.

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This work was supported by a key-project foundation of Anhui Science and Technology (No. 05023076). The authors thank Dr. Shenghua Wei from East China University of Science and Technology for editing the manuscript.

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Correspondence to Yugui Tao.

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Tao, Y., Wang, Y., Ye, L. et al. Simultaneous Determination of Omethoate and Dichlorvos by Capillary Electrophoresis. Bull Environ Contam Toxicol 81, 210–215 (2008).

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  • Capillaryelectrophoresis (CE)
  • Omethoate
  • Dichlorvos
  • Response surface methodology (RSM)
  • Determination