Study on carbamate pesticides by capillary electrophoresis with laser-induced fluorescence detection

YANG Yu-lin; ZHAO Xiao-yin; ZHAO Wen-jie; ZHOU Tian-shu

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Sep. 2012

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YANG Yu-lin, ZHAO Xiao-yin, ZHAO Wen-jie, ZHOU Tian-shu. Study on carbamate pesticides by capillary electrophoresis with laser-induced fluorescence detection[J]. Journal of East China Normal University (Natural Sciences), 2012, (5): 54-61.

Citation:

YANG Yu-lin, ZHAO Xiao-yin, ZHAO Wen-jie, ZHOU Tian-shu. Study on carbamate pesticides by capillary electrophoresis with laser-induced fluorescence detection[J]. Journal of East China Normal University (Natural Sciences), 2012, (5): 54-61.

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Study on carbamate pesticides by capillary electrophoresis with laser-induced fluorescence detection

1.
SGS-CSTC Standards Technical Service (Shanghai), Ltd., Shanghai 200233, China;
2.
Department of Environment Science, East China Normal University, Shanghai 200062, China

Received Date: 2011-09-01
Rev Recd Date: 2011-12-01
Publish Date: 2012-09-25

Abstract

Abstract

A sensitive and rapid capillary electrophoresis method with laser-induced fluorescence detection (CE-LIF) was developed for the determination of carbamate pesticides (including (3,5-dimethylphenyl) N-methylcarbamate (XMC), and mercaptodimethur). In alkaline solution, carbamate was hydrolyzed to methylamine, which can be derivatized by 4-chloro-7-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) and detected by CE-LIF. Several parameters which influence the hydrolysis, derivatization and electrophoresis separation, such as pH, concentration of buffer solution and concentration of NBD-Cl, were investigated. The detection limits of the three carbamates were 3.010-9、1.010-9 and 3.010-9 mol/L, respectively. The proposed method was successfully employed to determine the rate constants and activation energies for carbamates hydrolysis.
- capillary electrophoresis,
- laser-induced fluorescence,
- carbamate pesticides,
- rate constant,
- activation energy

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References(1)

References

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