Pesticide analysis by MEKC on a microchip with hydrodynamic injection from organic extract

Adelina Smirnova, Kiyohito Shimura, Akihide Hibara, Mikhail A. Proskurnin, Takehiko Kitamori

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


An integrated microchip for monitoring carbamate pesticides in environmental water using continuous flow chemical processes is under development, i.e., the integration of hydrolysis, azo-derivatization, liquid-liquid extraction, electrophoretic separation, and quantification. The separation of the derivatives of four carbamate pesticides (carbaryl, carbofuran, propoxur, and bendiocarb) extracted in the continuous flow of a 1-butanol phase was studied in a silica microchip using micellar EKC. A baseline separation of four pesticide derivatives was achieved on a silica chip using hydrodynamic injection with electroosmotic gating. Detection using a thermal lens microscope showed good linearity in the concentration range of 10-6-10-5 M with an LOD of 5 × 10-7 M, which is superior to that of conventional CE with UV absorption detection at a level of 10-4 M.

Original languageEnglish
Pages (from-to)904-908
Number of pages5
JournalJournal of Separation Science
Issue number5
Publication statusPublished - 2008 Mar 1
Externally publishedYes


  • Carbamate pesticides
  • Hydrodynamic injection
  • MEKC
  • Microchip separation
  • Thermal lens microscopy detection

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation


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