...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Determination of strontium and simultaneous determination of strontium oxide, magnesium oxide and calcium oxide content of Portland cement by derivative ratio spectrophotometry
【24h】

Determination of strontium and simultaneous determination of strontium oxide, magnesium oxide and calcium oxide content of Portland cement by derivative ratio spectrophotometry

机译：导数比分光光度法测定锶和同时测定硅酸盐水泥中氧化锶，氧化镁和氧化钙的含量

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 derivative spectrophotometric method has been developed for the determination of strontium in Portland cement. The method is applied successfully for the simultaneous determination of SrO, MgO and CaO. It is based on the use of Alizarin Complexone (AC) as a complexing agent and measurement of the derivative ratio spectra of the analytes. interferences of manganese(II) and zinc(II) were eliminated by precipitation. The validity of the method was examined by analyzing several Standard Reference Material (SRM) Portland cement samples. The strontium complex formed at pH 9.5 allows precise and accurate determination of strontium over the concentration range of 1.5-18 mg L-1 of strontium. The MDL (at 95% confidence level) was found to be 25 ng mL(-1) for strontium in National Institute of Standards and Technology (NIST) cement samples using the proposed method.
机译：已经开发了一种导数分光光度法测定波特兰水泥中的锶。该方法成功用于同时测定SrO，MgO和CaO。它基于使用茜素配合物（AC）作为络合剂并测量分析物的派生比率光谱。沉淀消除了锰（II）和锌（II）的干扰。通过分析几种标准参考材料（SRM）波特兰水泥样品，检验了该方法的有效性。在pH 9.5时形成的锶配合物可以精确，准确地测定1.5-18 mg L-1锶的浓度范围内的锶。使用提议的方法，在美国国家标准技术研究院（NIST）水泥样品中，锶的MDL（在95％的置信水平下）为25 ng mL（-1）。

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