| 自动电位滴定法快速测定建筑材料中低浓度氯离子的含量 |
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| 引用本文： | 李蜀萍,罗文华,徐苗青.自动电位滴定法快速测定建筑材料中低浓度氯离子的含量[J].安阳师范学院学报,2014(2):26-28. |
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| 作者姓名： | 李蜀萍 罗文华 徐苗青 |
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| 作者单位： | 安徽师范大学环境科学与工程学院;安徽海螺集团有限公司; |
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| 摘 要： | 本文提出了利用复合银电极自动电位滴定仪测定水泥中微量氯离子含量的方法。试验采用了简单的前处理步骤,确定了样品溶解（酸）及酸度的选择、共存离子的干扰去除等主要因素,建立了一种准确、快速测定水泥中微量氯离子含量的分析方法。在最佳试验条件下,对8种标准水泥样品进行了测定,所得回收率均在98.6%～99.8%之间,说明此法样品前处理简单高效,测试结果准确可靠,能适用于水泥中微量氯离子的测定,是对国标方法的补充。
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| 关 键 词： | 自动电位滴定法 氯离子 建筑材料 |
Rapid and Sensitive Determination of Trace Chloride Ion in Cement by Automatic Potentiometric Titration Method |
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| Institution: | LI Shu - ping, LUO Wen - hua , XU Miao - qing (1. Anhui Normal University, College of Environmental Science and Engineering, Wuhu 241003 ,China; 2. Anhui Conch Group Co. Ltd, Wuhu 241000,China) |
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| Abstract: | In this article,the automatic potentiometric titration is described for determination of trace chloride ion in cement. The process of pre-treatment is simplified largely. Selecting suitable acid and acidity and elimination of interference are also investigated. Under the optimum conditions,the recovery of added chloride ion is found to be 98. 6% ～ 99. 8%,which is obtained by measuring 8 standardized cement samples. This method is faster,more exact and accurate,and supplys a complement to Chinese National Standard. |
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| Keywords: | Potentiometric titration Cement Trace chloride ion |
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