金矿开采活动引起汞在黑水生态系统中的活性

被引：1

作者：

JohnA.Meech

MarcelloM.Veiga

Desmond Tromans

徐尚平

机构：

[1] 矿业工程硕士

[2] 环境地球化学硕士

[3] 冶金学硕士

来源：

AMBIO-人类环境杂志 | 1998年 / 27卷 / 02期

关键词：

络合物; 黑水; 无机形态; 配位化合物; 生物积累; 汞齐法; 金属汞; 采矿活动; 亚马孙; 金矿开采;

D O I：

暂无

中图分类号：

X171 [生态系统与污染生态学];

学科分类号：

071012 ; 0713 ;

摘要：

非正常金矿开采活动导致汞（Hg）的排放,是发展中国家的一个严重的环境问题。在亚马孙地区,每年要排放70～170t汞。生物受到污染的范围也非常广泛。汞必须先溶入水,然后再转化成甲基汞才能在食物链中积累。通常认为,汞必须先经氧化才能出现显著的溶解。在本项工作中,我们对水生环境中未被氧化的元素汞Hg0（水合）的稳定性进行了研究。在与有机酸相接触的情况下,热力学分析和电化学实验都发现了有机汞络合物形成的迹象。尽管尚未完全了解这些可溶形态的甲基化过程,但黑水河流中这些络合物的形成有利于生物可获得性的提高是确定无疑的。

引用

页码：92 / 98

页数：7

共 10 条

[1]

Atmospheric mercury and trace elements in the region of Alta Floresta in the Amazon Basin[J] . S. Hacon,P. Artaxo,F. Gerab,M. A. Yamasoe,R. C. Campos,L. F. Conti,L. D. Lacerda.Water, Air, & Soil Pollution . 1995 (1)

[2]

Mercury contamination in the Brazilian Amazon. Environmental and occupational aspects[J] . Water, Air, & Soil Pollution . 1995 (1)

[3]

Binding of methylmercury compounds by humic and fulvic acids[J] . H. Hintelmann,P. M. Welbourn,R. D. Evans.Water, Air, & Soil Pollution . 1995 (1)

[4]

Transformation processes involving mercury species in the atmosphere — results from a literature survey[J] . William H. Schroeder,Greg Yarwood,Hiromi Niki.Water Air & Soil Pollution . 1991 (1)

[5]

The behavior of mercury in the soil with special emphasis on complexation and adsorption processes - A review of the literature[J] . E. Schuster.Water Air & Soil Pollution . 1991 (1)

[6]

Effects of a fulvic acid on the speciation and mobility of mercury in aqueous solutions[J] . H. Xu,B. Allard.Water Air & Soil Pollution . 1991 (1)

[7]

Mercury in the Swedish environment — Recent research on causes, consequences and corrective methods[J] . Water, Air, & Soil Pollution . 1991 (1)

[8] REACTIONS OF FULVIC-ACID WITH METAL-IONS [J].

SCHNITZER, M ;

KERNDORFF, H .

WATER AIR AND SOIL POLLUTION, 1981, 15 (01) :97-108

[9]

Mercury in soils of British Columbia, a mercuriferous region[J] . M. K. John,C. J. Laerhoven,V. E. Osborne,I. Cotic.Water, Air, and Soil Pollution . 1975 (2)

[10]

Mercury concentrations in inland waters of goldmining areas in Rondonia, Brazil .2 Pfeiffer,WC,Lacerda,LD,Malm,O,Souza,MCM,Silveira,EG,Bastos,WR. Science of the Total Environment . 1989

← 1 →