The dispersal and storage of sediment-associated metals in an and river system: The Leichhardt River, Mount Isa, Queensland, Australia

被引：35

作者：

Taylor, Mark Patrick ^{[1
]}

Hudson-Edwards, Karen A. ^{[2
]}

机构：

[1] Macquarie Univ, Dept Phys Geog, N Ryde, NSW 2109, Australia

[2] Univ London Birkbeck Coll, Res Sch Earth Sci, London WC1E 7HX, England

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 152卷 / 01期

基金：

英国自然环境研究理事会;

关键词：

floodplain; metals; contamination; river; sediment; mount isa; Queensland; Australia;

D O I：

10.1016/j.envpol.2007.05.011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper details the distribution of Cu, Pb and Zn in aquatic systems draining Mount Isa Ag-Cu-Pb-Zn Mine in and northern Queensland, Australia. Sediment-metal concentrations in the < 2 mm grain-size fraction adjacent to and downstream of the mine significantly exceed background concentrations (Cu, 159; Pb, 36; Zn, 86 ppm) as well as Australian government sediment quality low trigger guidelines (Cu, 65; Pb, 50; Zn, 200 ppm). Overbank sediments are more contaminated than channel sediments with mean values of Cu, 480; Pb, 540; Zn, 750 ppm. Mean concentrations in cut riverbank samples from the < 2 mm fraction were Cu, 195; Pb, 724; Zn, 807 ppm. Corresponding < 180 mu m samples returned concentrations of Cu, 321; Pb, 995; Zn, 1110 ppm. Delivery of contaminants during wet seasons from Mount Isa Mine and historically contaminated riverbanks remains an ongoing issue. The ease of dust entrainment in and zones means that sediments enriched in toxic concentrations of metals may be widely dispersed and ultimately ingested and absorbed by biota. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：193 / 204

页数：12

共 75 条

[1]

[Anonymous], 1999, NAT ENV PROT ASS SIT

[2]

[Anonymous], 4 ANZECC AUSTR GOV D

[3]

[Anonymous], QI04074 QUEENSL DEP

[4] Fe-sulphate-rich evaporative mineral precipitates from the Rio Tinto, southwest Spain [J].

Buckby, T ;

Black, S ;

Coleman, ML ;

Hodson, ME .

MINERALOGICAL MAGAZINE, 2003, 67 (02) :263-278

[5]

*BUR MET, 2005, ANN AR POT EV

[6] INVESTIGATION OF THE HEAVY-METAL CONTENT OF THE WATER AND SEDIMENTS IN A RESERVOIR SUPPLYING DRINKING-WATER TO A MAJOR MINING CENTER [J].

COGGINS, AJ ;

TUCKWELL, KD ;

BYRNE, RE .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1979, 13 (10) :1281-1285

[7] Mercury speciation in the San Francisco Bay estuary [J].

Conaway, CH ;

Squire, S ;

Mason, RP ;

Flegal, AR .

MARINE CHEMISTRY, 2003, 80 (2-3) :199-225

[8]

Curtis A., 2007, P 5 AUSTR STREAM MAN, P241

[9] THE ROLE OF CLEARANCE AND DISSOLUTION IN DETERMINING THE DURABILITY OR BIOPERSISTENCE OF MINERAL FIBERS [J].

DAVIS, JMG .

ENVIRONMENTAL HEALTH PERSPECTIVES, 1994, 102 :113-117

[10]

DAYTON L, 2007, AUSTRALIAN, P6

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