Testing a humic speciation model by titration of copper-amended natural waters

被引：69

作者：

Dwane, GC ^{[1
]}

Tipping, E ^{[1
]}

机构：

[1] Inst Freshwater Ecol, Ambleside LA22 0LP, Cumbria, England

来源：

ENVIRONMENT INTERNATIONAL | 1998年 / 24卷 / 5-6期

关键词：

D O I：

10.1016/S0160-4120(98)00046-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Experiments were carried out in which samples of natural waters that had been acidified and amended with copper nitrate were titrated with base, and the activity of Cu2+ was monitored with an ion-specific electrode. The results could be explained in terms of the interactions of Cu2+ with inorganic and organic ligands, as calculated using the Windermere Humic Aqueous Model (WHAM). Optimised fits were obtained by adjusting the concentration of "active" fulvic acid. The active fulvic acid represented about 80% of the total concentration of dissolved organic matter for upland pools and lakes, and about 40% for lowland rivers. (C) 1998 Elsevier Science Ltd.

引用

页码：609 / 616

页数：8

共 16 条

[1]

Baes C.F., 1976, HYDROLYSIS CATIONS

[2] Metal ion binding by natural organic matter: From the model to the field [J].

Benedetti, MF ;

VanRiemsdijk, WH ;

Koopal, LK ;

Kinniburgh, DG ;

Gooddy, DC ;

Milne, CJ .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1996, 60 (14) :2503-2513

[3] METAL-ION BINDING TO HUMIC SUBSTANCES - APPLICATION OF THE NONIDEAL COMPETITIVE ADSORPTION MODEL [J].

BENEDETTI, MF ;

MILNE, CJ ;

KINNIBURGH, DG ;

VANRIEMSDIJK, WH ;

KOOPAL, LK .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1995, 29 (02) :446-457

[4] COPPER-BINDING BY DISSOLVED ORGANIC-MATTER .1. SUWANNEE RIVER FULVIC-ACID EQUILIBRIA [J].

CABANISS, SE ;

SHUMAN, MS .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1988, 52 (01) :185-193

[5]

Dzombak D.A., 1990, SURFACE COMPLEXATION

[6]

Martell A.E., 1977, Critical Stability Constants., V3

[7]

MOSELEY F, 1978, OCCASIONAL PUBL YORK, V3

[8]

NEAL C, 1997, SCI TOTAL ENVIRON, V194, P490

[9]

Ramsbottom A. E., 1976, FRESHWATER BIOL ASS, V33

[10] WHAM - A CHEMICAL-EQUILIBRIUM MODEL AND COMPUTER CODE FOR WATERS, SEDIMENTS, AND SOILS INCORPORATING A DISCRETE SITE ELECTROSTATIC MODEL OF ION-BINDING BY HUMIC SUBSTANCES [J].

TIPPING, E .

COMPUTERS & GEOSCIENCES, 1994, 20 (06) :973-1023

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