METAL TRANSPORT IN A STREAM POLLUTED BY ACID-MINE DRAINAGE - THE AFON GOCH, ANGLESEY, UK

被引：70

作者：

BOULT, S

COLLINS, DN

WHITE, KN

CURTIS, CD

机构：

[1] UNIV MANCHESTER,DEPT GEOG,MANCHESTER M13 9PL,LANCS,ENGLAND

[2] UNIV MANCHESTER,DEPT ENVIRONM BIOL,MANCHESTER M13 9PL,LANCS,ENGLAND

来源：

ENVIRONMENTAL POLLUTION | 1994年 / 84卷 / 03期

关键词：

ACID MINE DRAINAGE; HEAVY METAL; HYDROLOGY; PARTITIONING; SOLUTE TRANSPORT;

D O I：

10.1016/0269-7491(94)90139-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sampling of the Afon Goch over a 14-month period revealed maximum dissolved Fe, Al, Mn, Cu and Zn concentrations of 259, 167, 49, 60 and 42 mg dm-3, respectively, and pH as low as 2.3, making it one of the most metal- and acid-contaminated streams in the UK. The river produces particulates by precipitation of ferrihydrite, due to the entry of near-neutral tributary waters, under all discharge conditions. Consequently, metal transport in this stream is dominated by processes different from those in less contaminated streams. The stream acts as a sink for contaminants, except under high discharge, when accumulated metals are flushed from the system. The implications of these observations for the monitoring and management of streams polluted by acid mine drainage are discussed,

引用

页码：279 / 284

页数：6

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