...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Hollow fiber supported ionic liquid membrane microextraction for determination of sulfonamides in environmental water samples by high-performance liquid chromatography
【24h】

Hollow fiber supported ionic liquid membrane microextraction for determination of sulfonamides in environmental water samples by high-performance liquid chromatography

机译：中空纤维负载离子液体膜微萃取高效液相色谱法测定环境水样中的磺酰胺

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

By using ionic liquid as membrane liquid and tri-n-octylphosphine oxide (TOPO) as additive, hollow fiber supported liquid phase microextraction (HF-LPME) was developed for the determination of five sulfon-amides in environmental water samples by high-performance liquid chromatography with ultraviolet detection The extraction solvent and the parameters affecting the extraction enrichment factor such as the type and amount of carrier, pH and volume ratio of donor phase and acceptor phase, extraction time, salt-out effect and matrix effect were optimized. Under the optimal extraction conditions (Organic liquid membrane phase: [C8MIM][PF6] with 14% TOPO (w/v): donor phase: 4 mL, pH 4.5 KH2PO4 with 2 M Na2SO4; acceptor phase: 25 mu L, pH 13 NaOH; extraction time: 8 h), low detection limits (0.1-0.4 mu g/L, RSD <= 5%) and good linear range (1-2000 ng/mL, R-2 >= 0.999) were obtained for all the analytes. The presence of humic acid (0-25 mg/L dissolved organic carbon) and bovine serum albumin (0-100 mu g/mL) had no significant effect on the extraction efficiency. Good spike recoveries over the range of 82.2-103.2% were obtained when applying the proposed method on five real environmental water samples. These results indicated that this present method was very sensitive and reliable with good repeatabilities and excellent clean-up in water samples. The proposed method confirmed hollow fiber Supported ionic liquid membrane based LPME to be robust to monitoring trace levels of sulfadiazine, sulfamerazine, sulfamethazine, sulfadimethoxine and sulfamethoxazole in aqueous samples.
机译：通过使用离子液体作为膜液和三正辛基氧化膦（TOPO）作为添加剂，开发了中空纤维负载液相微萃取（HF-LPME），用于通过高效液相色谱法测定环境水样品中的五种磺酰胺紫外检测色谱法优化了萃取溶剂和影响萃取富集因子的参数，如载体的类型和用量，pH和施主相与受体相的体积比，萃取时间，盐析效应和基质效应。在最佳萃取条件下（有机液膜相：[C8MIM] [PF6]，TOPO含量为14％（w / v）：供体相：4 mL，pH 4.5 KH2PO4，Na 2 SO4浓度;受体相：25μL，pH 13 NaOH;萃取时间：8 h），所有样品均具有较低的检出限（0.1-0.4μg / L，RSD <= 5％）和良好的线性范围（1-2000 ng / mL，R-2> = 0.999）分析物。腐殖酸（0-25 mg / L溶解的有机碳）和牛血清白蛋白（0-100μg / mL）的存在对提取效率没有显着影响。当对五个真实的环境水样应用所提出的方法时，在82.2-103.2％的范围内获得了良好的加标回收率。这些结果表明，该方法非常灵敏，可靠，重复性好，对水样的净化效果好。所提出的方法证实了基于中空纤维支持的离子液体膜的LPME在监测水溶液样品中痕量的磺胺嘧啶，柳氮磺胺嘧啶，磺胺二甲基嘧啶，磺胺二甲恶嗪和磺胺甲恶唑方面具有鲁棒性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号