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author:

Wu, Fang (Wu, Fang.) [1] | Chen, Jinghua (Chen, Jinghua.) [2] | Lu, Wanping (Lu, Wanping.) [3] | Lin, Zian (Lin, Zian.) [4] (Scholars:林子俺) | Zhang, Lan (Zhang, Lan.) [5] (Scholars:张兰)

Indexed by:

Scopus SCIE

Abstract:

A novel poly (1-hexadecene-co-trimethylolpropane trimethacrylate) coating was prepared and applied as solid-phase microextraction (SPME) for analysis of pesticides in tea samples. This SPME coating was fabricated on the surface of fiber by in-situ copolymerization of 1-hexadecene and trimethylolpropane trimethacrylate, in the presence of the ternary porogen (cyclohexanol/1, 4-butanediol/water). Both the effects of porogen ratio and porogen composition on the SPME performance during the polymerization process were investigated. The application of the as-prepared coating was evaluated by extracting residual pesticides in tea samples. Some parameters affecting SPME efficiency such as extraction time, temperature, pH, ionic strength and desorption conditions were examined. Good linearity of the calibration curve was obtained in the range of 1.7-500 ng ml(-1) with correlation coefficient (r) better than 0.9957. The detection limits (S/N = 3) for six pesticides were 0.5-5.0 ng ml(-1) and the relative standard deviations (RSDs) of precision for one fiber, fiber-to-fiber, and day-to-day were 7.0-10.8 %, 4.9-13.3 % and 5.5-12.6 %, respectively (n = 5). Recoveries obtained at spiked tea samples were 80.8-108.8 % for different analytes. The results validated the as-prepared coating had high extraction efficiency toward pesticides as well as good solvent resistant.

Keyword:

High-performance liquid chromatography Pesticide analysis Poly (1-hexadecene-co-trimethylolpropane trimethacrylate) coating Solid-phase microextraction Tea analysis

Community:

  • [ 1 ] [Zhang, Lan]Fuzhou Univ, Analyt & Testing Ctr, Key Lab Anal & Detect Food Safety, Minist Educ & Fujian Prov, Fuzhou 350002, Fujian, Peoples R China
  • [ 2 ] [Lu, Wanping]Fuzhou Univ, Sport Sci Res Ctr, Fuzhou 350002, Fujian, Peoples R China
  • [ 3 ] [Zhang, Lan]Fuzhou Univ, Sport Sci Res Ctr, Fuzhou 350002, Fujian, Peoples R China
  • [ 4 ] [Wu, Fang]Fujian Med Univ, Coll Pharm, Fuzhou 350004, Fujian, Peoples R China
  • [ 5 ] [Chen, Jinghua]Fujian Med Univ, Coll Pharm, Fuzhou 350004, Fujian, Peoples R China

Reprint 's Address:

  • 张兰

    [Zhang, Lan]Fuzhou Univ, Analyt & Testing Ctr, Key Lab Anal & Detect Food Safety, Minist Educ & Fujian Prov, Fuzhou 350002, Fujian, Peoples R China

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Source :

CURRENT ANALYTICAL CHEMISTRY

ISSN: 1573-4110

Year: 2011

Issue: 4

Volume: 7

Page: 341-348

1 . 0

JCR@2011

1 . 7 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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