Kinetics of uptake of cadmium by Chlorella marina in different media

被引：7

作者：

Rollemberg, MC

Gonçalves, MSLS

机构：

[1] Inst Super Tecn, Ctr Quim Estrutural, P-1049001 Lisbon, Portugal

[2] Univ Estadual Maringa, Dept Quim, BR-87020900 Maringa, Parana, Brazil

来源：

BIOELECTROCHEMISTRY | 2000年 / 52卷 / 01期

关键词：

Chlorella marina; cadmium; voltammetry; kinetics;

D O I：

10.1016/S0302-4598(00)00084-2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The kinetics of cadmium binding to living Chlorella marina cells during a short time (a few minutes) has been studied in seawater conditions, being also considered separately the influence of calcium and chloride. Cadmium complexes with surface groups of C. marina cells are labile in terms of differential pulse anodic stripping voltammetry in media (0.01-0.7) M NaNO3 since the complexation reaction is kinetically fast. However, in media 0.7 M NaCl, 0.7 M NaCl + 10(-2) M Ca2- and in synthetic seawater diluted 1:4 or not, the complexes are inert, since kinetics is determined by the rate of exchange with alkaline-earth metals and/or the chloride anion. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：57 / 62

页数：6

共 23 条

[1] VOLTAMMETRIC STUDY OF THE INTERACTION OF CADMIUM WITH BACTERIAL-CELLS [J].