COMPLEXATION OF LEAD WITH HUMIC MATTER BY STRIPPING VOLTAMMETRY - PREVENTION OF ADSORPTION ON NAFION-COATED MERCURY FILM ELECTRODE

被引：30

作者：

CAPELO, S ^{[1
]}

MOTA, AM ^{[1
]}

GONCALVES, MLS ^{[1
]}

机构：

[1] Univ Tecn Lisboa, CTR QUIM ESTRUTURAL, INST SUPER TECN, P-1096 LISBON, PORTUGAL

来源：

ELECTROANALYSIS | 1995年 / 7卷 / 06期

关键词：

SPECIATION; HUMIC; TRACE METALS; ADSORPTION; NATION;

D O I：

10.1002/elan.1140070611

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The complexation of humic matter with lead in natural water conditions was studied by differential pulse anodic stripping voltammetry (DPASV) using a mercury film of a Nafion-coated mercury film as the working electrode. The results clearly show that the Nafion film greatly minimizes the adsorption of humics on the electrode. Besides adsorption, other effects on the voltammetic signal are discussed, such as the degree of lability, ligand heterogeneity, and the metal-to-ligand concentration ratio at the electrode surface.

引用

页码：563 / 568

页数：6

共 25 条

[1] VOLTAMMETRIC STUDY OF HUMIC AND FULVIC SUBSTANCES .5. INTERPRETATION OF METAL-ION COMPLEXATION MEASURED BY ANODIC-STRIPPING VOLTAMMETRIC METHODS
BUFFLE, J
VUILLEUMIER, JJ
TERCIER, ML
PARTHASARATHY, N
[J]. SCIENCE OF THE TOTAL ENVIRONMENT, 1987, 60 : 75 - 96
[2] Buffle J., 1988, COMPLEXATION REACTIO
[3] BUFFLE J, 1984, MET IONS BIOL SYST, V18, pCH6
[4] INFLUENCE OF METAL CONCENTRATION AT THE ELECTRODE SURFACE IN DIFFERENTIAL-PULSE ANODIC-STRIPPING VOLTAMMETRY IN THE PRESENCE OF HUMIC MATTER
BUGARIN, MG
MOTA, AM
PINHEIRO, JP
GONCALVES, MLS
[J]. ANALYTICA CHIMICA ACTA, 1994, 294 (03) : 271 - 281
[5] THE DETERMINATION OF CONSECUTIVE FORMATION CONSTANTS OF COMPLEX IONS FROM POLAROGRAPHIC DATA
DEFORD, DD
HUME, DN
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1951, 73 (11) : 5321 - 5322
[6] KINETICS OF DISSOCIATION OF COPPER(II)-PROLINE COMPLEX BY CYCLIC VOLTAMMETRY WITH A NAFION-COATED ELECTRODE
DOSSANTOS, MMC
CAPELO, S
GONCALVES, MLSS
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 364 (1-2) : 171 - 177
[7] EFFECT OF PHYSICOCHEMICAL HETEROGENEITY OF NATURAL COMPLEXANTS .1. VOLTAMMETRY OF LABILE METAL FULVIC COMPLEXES
FILELLA, M
BUFFLE, J
VANLEEUWEN, HP
[J]. ANALYTICA CHIMICA ACTA, 1990, 232 (01) : 209 - 223
[8] COPPER(II) TITRATION OF FULVIC-ACID LIGAND SITES WITH THEORETICAL, POTENTIOMETRIC, AND SPECTROPHOTOMETRIC ANALYSIS
GAMBLE, DS
UNDERDOWN, AW
LANGFORD, CH
[J]. ANALYTICAL CHEMISTRY, 1980, 52 (12) : 1901 - 1908
[9] HEYROVSKY J, 1965, PRINCIPLES POLAROGRA, pCH12
[10] APPLICATION OF POLYMER-COATED GLASSY-CARBON ELECTRODES IN ANODIC-STRIPPING VOLTAMMETRY
HOYER, B
FLORENCE, TM
BATLEY, GE
[J]. ANALYTICAL CHEMISTRY, 1987, 59 (13) : 1608 - 1614

← 1 2 3 →