EDTA配合滴定法测定食盐中的钙含量

Determination of Calcium Content in Calcium Salt by EDTA Complex Formation Titration

钙是人体所不可或缺的营养素之一,但受地域和环境条件的影响,我国人口中缺钙的情况依然存在。目前市场上供应的加钙盐和其他一些营养盐可以满足人们补充体内钙元素的需要,因此研究营养盐中钙的含量具有非常重要的意义。为建立快速简便的钙含量测定方法,采用EDTA配合滴定法测定加钙盐中钙的含量,测定结果加钙食盐中钙含量均符合国家标准。实验操作简单,结果准确,易于推广。

Calcium is one of essential nutrient for human body. In China, many people still have calcium deftciency symptoms affected by geographical and environmental conditions. Currently calcium salt and some other nutritive salt supplied on the market can provide people with the necessary calcium, so it is very important to analyze content of calcium in nutritive salt. To establish a rapid and simple method of calcium content, EDTA complex formation titration was used to determine the calcium content in salt. The result showed that the content of calcium meets national standards. The method is sample, accurate and worthy of promotion.