三聚磷酸钠螯合钙能力的测试  

The Test of the Chelated Force of Sodium Tripolyphosphate

作　　者：刘康莲[1] 况紫燕[1] 雷莉莉[1] 

机构地区：[1]黔南民族师范学院化学系,贵州都匀558000

出　　处：《黔南民族师范学院学报》2008年第3期78-80,共3页Journal of Qiannan Normal University for Nationalities

摘　　要：采用铬黑T为指示剂,用络合滴定法测量了三聚磷酸钠的螯合能力,该方法简便快速,准确性可满足实际需要。测量结果显示,三聚磷酸钠的螯合能力并非固定常数,不同产地、批次的三聚磷酸钠受其生产工艺条件的影响,其螯合力差异较大。In the test, the chelated force of sodium tripolyphosphate has been measured with the chromium black T indicator and the method of complexometric titration. This method is simple and fast, the accuracy of which can meet the actual needs. The results of the measurement show that the chelated force of sodium tripolyphosphate is not a fixed constant and different production areas and batches would influence the production technical conditions of sodium tripolyphosphate so as to make the chelated force different accordingly.

关 键 词：螯合力 三聚磷酸钠 差异 

分 类 号：O655[理学—分析化学]