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      Headspace in-tube microextraction combined with reverse-flow micellar electrokinetic capillary chromatography for detection of pyrethroid herbicides in fruits

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          Abstract

          A rapid, simple, and sensitive method has been developed for the analysis of pyrethroid herbicides in fruits by using headspace in-tube microextraction (HS-ITME) coupled with reverse-flow micellar electrokinetic capillary chromatography (RF-MECC). In the newly developed method, by placing a capillary filled with background electrolyte (BGE) of RF-MECC in the HS above the sample solution, the pyrethroid herbicides were extracted into the acceptor phase in the capillary. After extraction, electrophoresis of the extracts in the capillary was carried out. The influence of some essential BGE components such as sodium dodecyl sulfate (SDS) and organic modifiers concentrations was investigated. Extraction parameters were also systematically investigated, including the extraction temperature, extraction time, salt concentration, and volume of the sample solution. Under the optimized conditions, enrichment factors for three pyrethroids were 309, 133, and 288, respectively. The proposed method provided a good linearity, low limits of detection (below 1.00 ng/mL), and good repeatability of the extractions (relative standard deviations [RSDs] below 7.83%, n = 6). The fruit samples were analyzed by the proposed method, and the obtained results indicated that the proposed method provides acceptable recoveries and precisions.

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          Author and article information

          Journal
          1326
          Acta Chromatographica
          Acta Chromatographica
          Akadémiai Kiadó
          2083-5736
          2018
          : 1-5
          Affiliations
          [ 1 ]Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, P.R. China
          [ 2 ]School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, P.R. China
          Author notes
          Article
          10.1556/1326.2018.00436
          e3db0a28-c9e9-4168-a033-cae43e526af8
          © 2018 The Author(s)

          This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (https://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted use, distribution, and reproduction in any medium for non-commercial purposes, provided the original author and source are credited, a link to the CC License is provided, and changes - if any - are indicated.

          Page count
          Pages: 5
          Categories
          Original Research Paper

          Materials properties,Nanomaterials,Chemistry,Nanotechnology,Analytical chemistry,Thin films & surfaces
          pyrethroids,liquid microextraction,Headspace in-tube microextraction,micellar electrokinetic capillary chromatography

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