Evaluation of pectin binding of heavy metal ions in aqueous solutions

被引：127

作者：

Kartel, MT ^{[1
]}

Kupchik, LA

Veisov, BK

机构：

[1] Natl Acad Sci Ukraine, Inst Sorpt & Problems Endoecol, Kyiv, Ukraine

[2] State Off Ecol Safety, Kyiv, Ukraine

来源：

CHEMOSPHERE | 1999年 / 38卷 / 11期

关键词：

D O I：

10.1016/S0045-6535(98)00466-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Evaluation of adsorption performance of several industrially manufactured pectins towards some toxic heavy metals was carried out. Adsorption isotherms for divalent cations in simulant aqueous solutions were measured and corresponding distribution coefficients were calculated. The following selectivity sequences we found for pectins: Pb2+ >> Cu2+ > Co2+ > Ni2+ >> Zn2+ > Cd2+. It was shown that a beet pectin exhibits a high affinity for Pb2+ and Cu2+ ions, an apple pectin for Co2+ ion and a citrus pectin for Ni2+ ion. The binding properties of all pectins towards Zn2+ and Cd2+ ions are extremely poor. The quantitative data on adsorption performance of pectins suggest their applicability as food additives or remedies for efficient removal of Pb2+, Cu2+, Co2+, and Ni2+ ions from different biological systems, including human and animal organisms. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2591 / 2596

页数：6