INFLUENCE OF DISSOLVED SULFIDES ON COPPER COMPLEXATION IN SURFACE WATERS USING VOLTAMMETRIC METHODS

被引：2

作者：

Scheffer, Elizabeth W. O. ^{[1
]}

Grassi, Marco T. ^{[2
]}

机构：

[1] Univ Estadual Ponta Grossa, Dept Quim, BR-84030000 Ponta Grossa, PR, Brazil

[2] Univ Fed Parana, Dept Quim, BR-81531990 Curitiba, PR, Brazil

来源：

QUIMICA NOVA | 2010年 / 33卷 / 06期

关键词：

sulfide; copper speciation; square wave voltammetry; SPECIATION; CU; CD;

D O I：

10.1590/S0100-40422010000600006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

INFLUENCE OF DISSOLVED SULFIDES ON COPPER COMPLEXATION IN SURFACE WATERS USING VOLTAMMETRIC METHODS. In this work a sulfide quantification protocol using voltammetric methods was developed to evaluate the effect of dissolved sulfides on copper complexation. On the basis of pH, sulfide release from the dissociation of specific metal sulfide complexes can be electrochemically measured and then removed (as H2S) by a N-2 purge. Cathodic stripping square wave voltammetry (CSSWV) was conducted to quantify Cu sulfides complexes which dissociate at pH < 5.0 during the process of acid titration.

引用

页码：1254 / 1258

页数：5

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