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On-line concentration of triazine herbicides in microemulsion electrokinetic chromatography by electrokinetic injection assisted micelle to cyclodextrin stacking.

Authors
  • Zhen, Xiao-Ting1
  • Chen, Yan1
  • Yang, Juan1
  • Dong, Xin1
  • Zheng, Hui2
  • Cao, Jun3
  • 1 College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China. , (China)
  • 2 College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China. Electronic address: [email protected] , (China)
  • 3 College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China. Electronic address: [email protected] , (China)
Type
Published Article
Journal
Journal of chromatography. A
Publication Date
Sep 27, 2020
Volume
1628
Pages
461438–461438
Identifiers
DOI: 10.1016/j.chroma.2020.461438
PMID: 32822978
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

A fast, simple, environmentally friendly and sensitive on-line concentration method using microemulsion system as background solution (BGS) was developed for the trace detection of propazine, atrazine, simazine in food samples. The electrokinetic injection assisted micelle to cyclodextrin stacking (MCDS) was designed for the enrichment of target compounds. The factors affected enrichment performance, such as the kind of CDs, the amount of CDs, the concentration of methanol in BGS, the concentration of micelle in sample matrix, the concentration of phosphoric acid in BGS and the sample injection time were optimized. The optimized electrophoretic condition was obtained as following: 50 mM α-CD, 20 mM SDS in sample matrix., 80 mM PA and 20% MeOH (v/v) in BGS, sample solution by electrokinetic injection at -10 kV for 80 s. Under the optimized conditions described above, the linear range was 0.1-20 ug/mL with a good linear relationship with a correlation coefficient (r) ≥ 0.9985. The SEFs for the propazine, atrazine, simazine were found to be 123, 85 and 62 respectively. The proposed MCDS-MEEKC method provided an efficient method for trace analysis of triazine herbicides in honey and dendrobium officinale samples. Copyright © 2020. Published by Elsevier B.V.

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