...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Analytica chimica acta >A planar microelectrodialytic NaOH generator for eluite conversion after suppressed conductometric detection in ion chromatography
【24h】

A planar microelectrodialytic NaOH generator for eluite conversion after suppressed conductometric detection in ion chromatography

机译：离子色谱中抑制电导检测后用于洗脱剂转化的平面微电渗析NaOH发生器

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

A microelectrodialytic NaOH generator (MENG), incorporated after the conductivity detector in a suppressed anion chromatography system based on hydroxide eluents, converts the suppressed eluites from the acid form to a sodium salt (NaOH + HX --> NaX + H2O). Against the conductive background of the NaOH generated by the MENG, the eluites appear as negative peaks (OH- replaced by X-). In a conventional conductometric, suppressed anion chromatography system very weak acids produce a very poor response, if at all, because HX is poorly ionized. The present method enables the sensitive detection of weak and very weak acids and also enables analyte identification if conventional detection is simultaneously used. A previous paper described MENG devices of tubular construction. The present paper describes an improved MENG device of planar geometry; relevant performance data pertaining to induced dispersion, background noise and the Faradaic efficiency of the device are presented. New considerations on the merits of the two-dimensional detection approach are outlined. (C) 1999 Elsevier Science B.V. All rights reserved. [References: 18]
机译：微电渗析NaOH发生器（MENG），在电导检测器后并入基于氢氧化物洗脱液的抑制型阴离子色谱系统中，将抑制型洗脱液从酸形式转化为钠盐（NaOH + HX-> NaX + H2O）。在MENG产生的NaOH的导电背景下，洗脱液显示为负峰（OH-被X-取代）。在传统的电导抑制阴离子色谱系统中，非常弱的酸会产生非常差的响应（如果有的话），因为HX的离子化很差。如果同时使用常规检测方法，则本方法能够灵敏地检测弱酸和极弱酸，并且还能够进行分析物鉴定。先前的论文描述了管状结构的MENG装置。本文描述了一种改进的平面几何MENG装置。给出了与设备的感应色散，背景噪声和法拉第效率有关的相关性能数据。概述了有关二维检测方法优点的新考虑。 （C）1999 Elsevier Science B.V.保留所有权利。 [参考：18]

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