三聚磷酸钠螯合钙能力的测试_刘康莲.pdfVIP

2008 3 刘康莲, 况紫燕, 雷莉莉 ( 黔南民族师范学院化学系, 贵州都匀 558000 ) : 采用铬黑 T 为指示剂, 用络 滴定法测量了三聚磷酸钠的螯 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 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 力差异较大 : 螯 力; 三聚磷酸钠; 差异 : O655 : A : 1674- 2389( 2008) 03- 0078- 03 The T est of the Chelated Force of Sod ium Tr ipolyphosphate LIU Kang- lian, KUANG Zi- an, LE I L i- li ( Chem istr Dept. , Q iannan Norm al College for Nationalities, Du un 558000, Ch ina) Ab stract: In the test, th e chelated force of sodium tripo l phosphate h as beenm easuredw ith the chrom ium black T indicator and the m ethod of complexom etric titration. Th ism ethod is smi ple and fast, th e accurac ofw h ich can m eet th e actual needs. The results of the m easurem ent show that the chelated force of sodium tripo l phosphate is not a fixed constant and different production areas and batchesw ould influence th e production techn ica l conditions of sodium tripol phosphate so as to m ake th e chelated force different accordingl . K ey w ord s: the ch elated force; sodium tripo l phosphate; differen ce , , () , : - OH, - SH, - COOH, - PO H , - 3 2 NR , - S- , - O- 2 , : ( 1); ( 2); ( 3); ( ; ( 4), : ( ); ; , (); : ( EDTA)() () ()() , ( 1) , EDTA; ( 2), : B12 , ; ( 3), ; ( 4) , , , , , , , , : 2008- 03- 10 : 刘康莲( 1967- ), 女( 布依族), 贵州都匀人, 黔南民族师范学院化学系讲师, 研究方向: 有机化学 # 78# 2008 3 , , , , , , , 1 , () 1mg Ca( CaCO3 ), : ( mg) ( CaCO ) = 3 (mg) , , : ( 1) T : T , EDTA , ( 2): , EDTA , ( 3) : , () (