• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Analytical Sciences >On-site Determination of Arsenic, Selenium, and Chromium(VI) in Drinking Water Using a Solid-phase Extraction Disk/Handheld X-ray Fluorescence Spectrometer
【24h】

On-site Determination of Arsenic, Selenium, and Chromium(VI) in Drinking Water Using a Solid-phase Extraction Disk/Handheld X-ray Fluorescence Spectrometer

机译：固相萃取盘/手持式X射线荧光光谱仪现场测定饮用水中砷，硒和铬（VI）

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A rapid, simple technique combining disk solid-phase extraction and handheld X-ray fluorescence (XRF) spectrometry was developed for the on-site determination of As, Se, and Cr(VI) in drinking water. For the preconcentration of As, Se, and Cr(VI), a 50-mL aqueous sample was adjusted to pH 4, followed by passage through a Ti-loaded anion-exchange disk (Ti-AED). Both sides of the Ti-AED were coated with an adhesive cellophane tape prior to drying using a cordless hair iron, followed by a handheld XRF measurement. The Ti-AED adsorbed As(III), As(V), Se(IV), Se(VI), and Cr(VI) in water without requiring oxidation and reduction. The detection limits of As, Se, and Cr(VI) were all 1.0 μg L~(?1). Good recoveries were obtained by measuring certified reference materials, and spiking natural mineral water with As, Se, and Cr(VI). As the proposed method does not require a power supply or toxic reagents in any analytical step, it is suitable for the on-site determination of toxic elements in drinking water.
机译：快速，简单的技术结合了磁盘固相萃取和手持式X射线荧光（XRF）光谱技术，用于现场测定饮用水中的As，Se和Cr（VI）。为了对As，Se和Cr（VI）进行预浓缩，将50 mL水性样品的pH值调整为4，然后通过装载有Ti的阴离子交换盘（Ti-AED）。在使用无绳电熨斗进行干燥之前，将Ti-AED的两面都涂有玻璃纸胶带，然后进行手持XRF测量。 Ti-AED无需氧化和还原即可吸附水中的As（III），As（V），Se（IV），Se（VI）和Cr（VI）。 As，Se和Cr（VI）的检出限均为1.0μgL〜（？1）。通过测量经认证的参考物质，并用As，Se和Cr（VI）掺入天然矿泉水，可获得良好的回收率。由于所提出的方法在任何分析步骤中都不需要电源或有毒试剂，因此适合现场测定饮用水中的有毒元素。

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