Arid
DOI10.1039/c0em00396d
Water and sediment quality of dry season pools in a dryland river system: the upper Leichhardt River, Queensland, Australia
Mackay, Alana K.1; Taylor, Mark P.1; Hudson-Edwards, Karen A.2
通讯作者Mackay, Alana K.
来源期刊JOURNAL OF ENVIRONMENTAL MONITORING
ISSN1464-0325
EISSN1464-0333
出版年2011
卷号13期号:7页码:2050-2061
英文摘要

This article presents the geochemical characteristics and physicochemical properties of water and sediment from twelve semi-permanent, dryland pools in the upper Leichhardt River catchment, northwest Queensland, Australia. The pools were examined to better understand the quality of sediments and temporary waters in a dryland system with a well-established metal contamination problem. Water and sediment sampling was conducted at the beginning of the hydroperiod in May and September 2007. Water samples were analyzed for major solute compositions (Ca, Na, K, Mg, Cl, SO4, HCO3) and water-soluble (operationally defined as the <0.45 mu m fraction) metals (Cd, Cu, Pb, Zn). Sediment samples were analyzed for total extractable and bioaccessible metals (As, Cd, Cu, Pb, Zn), elemental composition and grain morphology. At the time of sampling a number of pools contained water and sediment with elevated concentrations, compared to Australian regulatory guidelines, of Cu (maximum: water 28 mu g L-1; sediment 770 mg kg(-1)), Pb (maximum: water 3.4 mu g L-1; sediment 630 mg kg(-1)) and Zn (maximum: water 150 mu g L-1; sediment 780 mg kg(-1)). Concentrations of Cd and As in pools were relatively low and generally within Australian regulatory guideline values. Localized factors, such as the interaction of waters with anthropogenic contaminants from modern and historic mine wastes (i.e. residual smelter and slag materials), exert influence on the quality of pool waters. Although the pools of the upper Leichhardt River catchment are contaminated, they do not appear to be the primary repository of water and sediment associated metals when compared to materials in the remainder channel and floodplain. Nevertheless, a precautionary approach should be adopted to mitigating human exposure to contaminated environments, which might include the installation of appropriate warning signs by local health and environmental authorities.


类型Article
语种英语
国家Australia ; England
收录类别SCI-E
WOS记录号WOS:000292984100022
WOS关键词ARID-ZONE RIVER ; ARSENIC SPECIATION ; COOPER CREEK ; MOUNT-ISA ; LEAD ; CHANNEL
WOS类目Chemistry, Analytical ; Environmental Sciences
WOS研究方向Chemistry ; Environmental Sciences & Ecology
来源机构University of London
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/169076
作者单位1.Macquarie Univ, Fac Sci, Dept Geog & Environm, N Ryde, NSW 2109, Australia;
2.Univ London, UCL Birkbeck, Res Sch Earth Sci, London WC1E 7HX, England
推荐引用方式
GB/T 7714
Mackay, Alana K.,Taylor, Mark P.,Hudson-Edwards, Karen A.. Water and sediment quality of dry season pools in a dryland river system: the upper Leichhardt River, Queensland, Australia[J]. University of London,2011,13(7):2050-2061.
APA Mackay, Alana K.,Taylor, Mark P.,&Hudson-Edwards, Karen A..(2011).Water and sediment quality of dry season pools in a dryland river system: the upper Leichhardt River, Queensland, Australia.JOURNAL OF ENVIRONMENTAL MONITORING,13(7),2050-2061.
MLA Mackay, Alana K.,et al."Water and sediment quality of dry season pools in a dryland river system: the upper Leichhardt River, Queensland, Australia".JOURNAL OF ENVIRONMENTAL MONITORING 13.7(2011):2050-2061.
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