SPECIATION OF TRACE-METALS IN SEAWATER BY ANODIC-STRIPPING VOLTAMMETRY - CRITICAL ANALYTICAL STEPS

被引：44

作者：

CAPODAGLIO, G

SCARPONI, G

TOSCANO, G

BARBANTE, C

CESCON, P

机构：

[1] Department of Environmental Sciences, University of Venice, Venezia, I-30123, Calle Larga Santa Marta

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1995年 / 351卷 / 4-5期

关键词：

D O I：

10.1007/BF00322907

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The speciation of trace metals in seawater based on the voltammetric (DPASV) titration of ligands by metal addition is considered. The method allows the determination of the total metal amount, the ''labile'' fraction, the ligand concentration and the related conditional stability constant. Analytical problems related to sample contaminations during sampling, filtration and storage, displacement of complexing equilibria in freeze storage, the kinetics of the reaction of complexation and the potential kinetic lability of organic complexes are discussed and possible solutions presented. Data on quality control tests carried out to verify the accuracy of the laboratory procedure for trace metal determination in seawater are reported.

引用

页码：386 / 392

页数：7

共 39 条

[31] CONCENTRATIONS OF CADMIUM, COPPER, LEAD AND ZINC IN SURFACE WATERS OF THE NORTHWEST ATLANTIC-OCEAN - A COMPARISON OF GO-FLO AND TEFLON WATER SAMPLERS [J].