钙离子选择性电极测定奶粉中钙的方法探讨  

Investigation on the method of detecting calcium in milk powder by calcium ion selective electrode

作　　者：沈静薇[1] 

机构地区：[1]上海市疾病预防控制中心,上海200336

出　　处：《上海预防医学》2003年第7期343-344,共2页Shanghai Journal of Preventive Medicine

摘　　要：[目的 ]　探索用钙离子选择性电极测定奶粉中钙含量方法的可行性。　 [方法 ]　摸索钙离子选择性电极测定奶粉中钙的实验条件和干扰物对测定结果的影响。　 [结果 ]　经准确度和精密度测试 ,相对误差为 -3 .2 8%～4.10 %,相对标准差为 2 .6%。　 [结论 ]　该法用于奶粉中钙测定是可行的 。[Objective] To investigate the feasibility of a calcium ion selective electrode to detect calcium in milk powder. [Methods] To explore the conditions of the experiment and how the result of experiment was influenced by interference of bases. [Results] After the accuracy and the precision check , the correlation error ranked from-3.28%～+4.10% , relative standard deviation was 2.6%. [Conclusion] This method not only simplified the operation process but also shortened the test time, so it is feasible for detecting calcium in milk powder.

关 键 词：钙离子选择性电极 测定 奶粉 钙 干扰物 

分 类 号：TS252[轻工技术与工程—农产品加工及贮藏工程]