Quantitative analysis of seven triazine herbicides by on-line micellar electrokinetic chromatography-electrospray ionization mass spectrometry
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- Title
- Quantitative analysis of seven triazine herbicides by on-line micellar electrokinetic chromatography-electrospray ionization mass spectrometry
- Authors
- Kang, SH; Shin, DH; Chang, YS
- Date Issued
- 2003-09-20
- Publisher
- KOREAN CHEMICAL SOC
- Abstract
- This paper presents a successful demonstration of the on-line coupling of MEKC (micellar electrokinetic chromatography) to ESIMS (electrospray ionization mass spectrometry) for the quantitative analysis of seven s-triazine herbicides. The on-line MEKC-ESIMS was used to determine the structure of CE-separated peaks of seven triazine herbicides. The mixture of triazine herbicides was separated in a 20 mM sodium borate buffer (pH 8.5) containing 15 mM sodium dodecylsulfate (SDS) by using a bare fused-silica capillary. Electrospray ionization mass spectrometer was operated in the positive-ion mode when the mass spectra of seven triazine herbicides were observed from each peak, and the solution of water-methanol-formic acid (50/49/1 v/v/v) was used as a sheath liquid. The effects of SDS concentration, the run buffer pH, and the electric field on the separation of seven s-triazine herbicides were investigated. The MEKC-ESIMS detection showed 5 to 10 times higher sensitivity compared to the MEKC-UV detection. In addition, it did not need any pretreatment step.
- Keywords
- triazines; on-line MEKC-ESIMS; CAPILLARY-ZONE-ELECTROPHORESIS; NATURAL-WATERS; SEPARATION; EXTRACTION; PEPTIDES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18315
- DOI
- 10.5012/bkcs.2003.24.9.1319
- ISSN
- 0253-2964
- Article Type
- Article
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, vol. 24, no. 9, page. 1319 - 1323, 2003-09-20
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