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首页> 外文期刊>Chemosphere >Analysis of sulfonamides in environmental water samples based on magnetic mixed hemimicelles solid-phase extraction coupled with HPLC-UV detection
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Analysis of sulfonamides in environmental water samples based on magnetic mixed hemimicelles solid-phase extraction coupled with HPLC-UV detection

机译:混合半磁固相萃取-HPLC-UV检测法用于环境水样中磺胺类药物的分析

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摘要

The magnetic mixed hemimicelles solid-phase extraction (MMHSPE), based on the adsorption of cation surfactant octadecyltrimethylammonium bromide (OTMABr) onto magnetite nanoparticles (Fe_3O_4 NPs) to form mixed hemimicelles, was proposed for the preconcentration of several sulfonamides (SAs) compounds including sulfamethoxazole (SMX), sulfamethoxydiazine (SMD), sulfadimethoxine (SDM) and sulfaquinoxaline (SQX) from environmental water samples. This method avoided the time-consuming column-passing process of loading large volume samples in traditional SPE through the rapid isolation of OTMABr-coated Fe_3O_4 NPs with an adscititious magnet. Mixed hemimicelles formed on the surface of Fe_3O_4 NPs by OTMABr showed great adsorptive tendency towards analytes. The OTMABr-coated Fe_3O_4 NPs adsorbents were easy to be prepared, low cost and environmentally friendly. A comprehensive study on the adsorption conditions such as the amount of the surfactant, the solution pH, the desorption condition and the maximum extraction sample volume were optimized. A concentration factor of 1000 was achieved by the extraction of 500 mL of environmental water samples using MMHSPE. Detection limits obtained for SMX, SMD, SDM and SQX were 0.026, 0.024, 0.033 and 0.030 μg L~(-1) respectively. Good recoveries (70-102%) with low relative standard deviations (1-6%) were achieved in analyzing spiked water samples. Low concentration of SQX was found in hospital primary and final sewage effluent sample.
机译:建议将阳离子表面活性剂十八烷基三甲基溴化铵(OTMABr)吸附到磁铁矿纳米颗粒(Fe_3O_4 NPs)上形成混合半磁悬浮混合磁半固相萃取(MMHSPE),以预浓缩包括磺胺甲恶唑的几种磺酰胺(SAs)化合物(SMX),磺胺甲氧基二嗪(SMD),磺胺二甲氧嘧啶(SDM)和磺胺喹喔啉(SQX)来自环境水样。该方法通过使用吸附磁体快速隔离OTMABr涂层的Fe_3O_4 NP,避免了传统SPE中加载大量样品的费时的列传递过程。 OTMABr在Fe_3O_4 NPs表面形成的混合半胶束对分析物有很大的吸附趋势。 OTMABr包覆的Fe_3O_4 NPs吸附剂易于制备,成本低廉且环境友好。优化了对吸附条件的综合研究,例如表面活性剂的量,溶液的pH,解吸条件和最大提取样品量。通过使用MMHSPE提取500 mL环境水样品,可实现1000的浓​​缩系数。 SMX,SMD,SDM和SQX的检出限分别为0.026、0.024、0.033和0.030μgL〜(-1)。分析加标水样时,回收率高(70-102%),相对标准偏差低(1-6%)。在医院主要和最终污水样品中发现低浓度的SQX。

著录项

  • 来源
    《Chemosphere》 |2009年第10期|1306-1312|共7页
  • 作者单位

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Physics, Jilin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Physics, Jilin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China;

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

    College of Chemistry, JiIin University, 2699 Qianjin Street, Changchun 130012, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnetic mixed hemimicelles solid-phase extraction; Fe_3O_4 nanoparticles; sulfonamides; environmental water samples;

    机译:磁混合半胶束固相萃取;Fe_3O_4纳米粒子;磺酰胺;环境水样;

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