• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian Journal for Science and Engineering >Determination of Bismuth Traces by HG-ICP-OES After Separation by Cloud Point Extraction Using Thiourea and Iodide Mixture
【24h】

Determination of Bismuth Traces by HG-ICP-OES After Separation by Cloud Point Extraction Using Thiourea and Iodide Mixture

机译：硫脲和碘化物混合物浊点萃取分离-HG-ICP-OES测定痕量铋

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

We developed a highly sensitive and selective cloud point extraction methodology for the preconcentration of trace levels of Bi(Ⅲ) prior to Bi analysis by hydride generation inductively coupled plasma optical emission spectrometry (HG-ICP-OES). Bismuth (Ⅲ) ions were extracted as ternary mixed iodo/thiourea complexes, at pH 1.0. This extraction was mediated by micelles of non-ionic surfactant (Triton X-1 14). The optimal extraction and reaction conditions, i.e., pH, reagent and surfactant concentrations, temperature, incubation and centrifuge times, were evaluated and optimized. Under the optimized conditions, linearity was obeyed in the range of 0.10-15 ng mL~(-1) of Bi(Ⅲ) with detection limits of 0.01 and 0.20 ng mL~(-1) and preconcentration factors of 500. We examined the matrix effects associated with selected onium complex forming cations [e.g., Cd(Ⅱ), Hg(Ⅱ), Pd(Ⅱ), Fe(Ⅲ), Ag(I), Pt(Ⅳ)] and anions, which may accompany the analyte. The developed method was successfully used to determine the Bi(Ⅲ) concentrations of synthetic mixtures, and samples of real water, soil, urine, ash coal, pure metals and ointment.
机译：我们开发了一种高灵敏度和选择性的浊点萃取方法，用于在氢化物发生电感耦合等离子体发射光谱法（HG-ICP-OES）进行Bi分析之前对Bi（Ⅲ）痕量水平进行预浓缩。在pH 1.0时，以三元混合碘/硫脲复合物的形式提取铋（Ⅲ）离子。该提取是由非离子表面活性剂（Triton X-1 14）的胶束介导的。评价和优化了最佳的提取和反应条件，即pH，试剂和表面活性剂浓度，温度，温育和离心时间。在最佳条件下，Bi（Ⅲ）的线性范围为0.10-15 ng mL〜（-1），检出限为0.01和0.20 ng mL〜（-1），预浓系数为500。与选定的可能形成分析物的鎓络合物形成阳离子[例如Cd（Ⅱ），Hg（Ⅱ），Pd（Ⅱ），Fe（Ⅲ），Ag（I），Pt（Ⅳ）]和阴离子有关的基质效应。该方法成功地用于测定合成混合物的Bi（Ⅲ）浓度，以及真实水，土壤，尿液，灰煤，纯金属和软膏的样品。

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