几种常见海藻酸盐络合常数的测定

食品科学 ›› 2005, Vol. 26 ›› Issue (10): 194-195.

几种常见海藻酸盐络合常数的测定

王孝华, 聂明, 谭世语

重庆交通学院实验教学部，重庆大学材料科学与工程学院，重庆大学化学化工学院

出版日期:2005-10-15 发布日期:2011-09-25

To Determine the Complexing Constants of Several Alginates

WANG Xiao-Hua, NIE Ming, TAN Shi-Yu

1.Department of Experimental Teaching, Chongqing Jiaotong University; 2.College of Materials Science and Engineering, Chongqing University; 3.School of Chemistry and Chemical Engineering , Chongqing University

Online:2005-10-15 Published:2011-09-25

摘要/Abstract

摘要： 通过实验,测定了海藻酸根与Pb2+、Ca2+、Zn2+和Mn2+等典型金属离子的络合能力,并取得了相应的络合常数,其络合常数及络合强度关系为KPb2+(6.4×106)>KCa2+(4.5×105)>KZn2+(1.11×104)>KMn2+(3.2×102)。结果表明海藻酸根与Pb2+的络合能力最强,与Mn2+的络合能力最弱。

关键词: 海藻酸盐, 络合能力, 络合常数

Abstract: The complexing ability between alginate radical (Alg—) and some typical ions such as Pb2+, Ca2+, Zn2+ and Mn2+ were determined in the applied research on alginate. The complexing constants and strength relationship were KPb2+(6.4×106)>KCa2+ (4.5×105)>KZn2+(1.11×104)>KMn2+(3.2×102), which indicated that the ability of Alg- complexing with Pb2+ was the strongest while Mn2+ the weakest.

Key words: alginate, complexing ability, complexing constants

王孝华, 聂明, 谭世语. 几种常见海藻酸盐络合常数的测定[J]. 食品科学, 2005, 26(10): 194-195.

WANG Xiao-Hua, NIE Ming, TAN Shi-Yu. To Determine the Complexing Constants of Several Alginates[J]. FOOD SCIENCE, 2005, 26(10): 194-195.

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