Pipette-tip solid-phase extraction by use of a sol–gel hybrid adsorbent: a new pretreatment strategy for rapid screening of cucumbers for cyanazine and atrazine

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• 作者：Mingyu Wang ; Hongyuan Yan ; Yanan Yuan ; Yehong Han
• 关键词：Pipette ; tip solid ; phase extraction ; sol–gel hybrid adsorbent ; γ ; (methacryloyloxy)propyltrimethoxysilane ; Cucumber
• 刊名：Analytical and Bioanalytical Chemistry
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：407
• 期：4
• 页码：1231-1239
• 全文大小：1,841 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Analytical Chemistry
  Food Science
  Inorganic Chemistry
  Physical Chemistry
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1618-2650

文摘

A pipette-tip solid-phase extraction (PT–SPE) method using a sol–gel hybrid adsorbent has been developed. The method could be used for rapid screening of vegetable matrices for cyanazine and atrazine; assay of cucumbers is reported as an example. The sol–gel hybrid adsorbent was synthesized from tetraethyl orthosilicate (TEOS) as the precursor and γ-(methacryloyloxy)propyltrimethoxysilane (KH570) as both surface modifying agent and monomer for the polymerization. Under the optimized conditions, good calibration linearity was obtained in the range 0.022-.65?μg?g? with correlation coefficients (r) ?.9996. Recovery at three spike levels ranged from 87.6 to 93.8?% with relative standard deviations ?.8?%. This extraction strategy has several advantages, for example ease of assembly, low cost, and high extraction efficiency, and is a potential pretreatment strategy for rapid screening of cyanazine and atrazine in vegetables. Graphical Abstract PT–SPE procedure and chromatograms obtained from cucumber