氯化银比浊法测定水样中氯离子
氯化银比浊法测定水样中氯离子
目的建立氯化银比浊法测定水样中氯离子的方法。方法用硝酸调节溶液pH, 加入硝酸银溶液, 使之与氯离子反应, 生成氯化银悬浊液, 利用分光光度法测定吸光度, 通过工作曲线确定浓度。结果氯离子浓度为0~6 μg/mL时线性方程为Y=0.0473X0.0004, 相关系数为0.9995, 线性关系较好, 相对标准偏差为2.0%, 回收率范围为96.89%~108.25%。结论此方法检测效率高, 适合测定氯离子含量较小的样品。
ObjectiveTo establish a method of determination of chloride ion in water samples by silver chloride turbidimetry. MethodsThe pH of the solution was adjusted with nitric acid, and silver nitrate solution was added and react with chloride ions to form a silver chloride suspension. The absorbance was measured by spectrophotometry and the concentration was determined by the working curve. ResultsWhen the chloride ion concentration was 06 μg/mL, the linear equation was Y=0.0473X0.0004, and the correlation coefficient was 0.9995. The linear relationship is good. The relative standard deviation was 2.0%, and the recovery range was 96.89%108.25%. ConclusionThis method has high detection efficiency, which is suitable for the determination of samples with small chloride ion content.
标题：氯化银比浊法测定水样中氯离子
英文标题：Determination of chloride ion in water samples by silver chloride turbidimetry
作者：
张宵 保定蒙牛饮料有限公司
曹文燕 保定蒙牛饮料有限公司
田桂艳 保定蒙牛饮料有限公司
王丹慧 保定蒙牛饮料有限公司
高建军 保定蒙牛饮料有限公司
智丽慧 保定蒙牛饮料有限公司
包岗雪 保定蒙牛饮料有限公司
王泽 保定蒙牛饮料有限公司
中文关键词:分光光度法,氯化银悬浊液,硝酸溶液,硝酸银溶液,工作曲线,
英文关键词:spectrophotometry,silver chloride suspension,nitric acid solution,silver nitrate solution,working curve1,
发表日期：2019-11-26
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