Geochemical cycling and speciation of copper in waters and sediments of Macquarie Harbour, Western Tasmania

Teasdale, Peter R.; Apte, Simon C.; Ford, Phillip W.; Batley, Graeme E.; Koehnken, L.

doi:10.1016/s0272-7714(02)00381-5

Cited by 91 publications

(62 citation statements)

References 37 publications

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“…The King River transports Cu to the delta and harbour as: (1) particulate Cu and Cu ore particles and adsorbed onto other materials; (2) colloidal Cu, with the colloidal material mainly Fe and Mn (oxy)hydroxides, with Cu adsorbed onto or co-precipitated with them and (3) dissolved Cu (Eriksen et al 2001;Teasdale et al 2003). The rapid increase in pH associated with increasing salinity in the delta region causes dissolved Cu to be removed via adsorption onto amorphous Fe(III) oxyhydroxide flocs and onto existing Fe colloids which then flocculate (Featherstone and O'Grady 1997;Eriksen et al 2001;Teasdale et al 2003). These processes result in a significant proportion of dissolved Cu being removed from solution (Featherstone and O'Grady 1997).…”

Section: Study Areamentioning

confidence: 99%

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Lithological and geochemical record of mining-induced changes in sediments from Macquarie Harbour, southwest Tasmania, Australia

et al. 2009

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Macquarie Harbour in southwest Tasmania, Australia, has been affected severely by the establishment of mines in nearby Queenstown in the 1890s. As well as heavy metal-laden acid rock drainage from the Mount Lyell mine area, over 100 Mt of mine tailings and slag were discharged into the Queen and Ring Rivers, with an estimated 10 Mt of mine tailings building a delta of ca. 2.5 km 2 and ca. 10 Mt of fine tailings in the harbour beyond the delta. Coring of sediments throughout Macquarie Harbour indicated that mine tailings accreted most rapidly close to the King River delta source with a significant reduction in thickness of tailings and heavy metal contamination with increasing distance from the King River source. Close to the King River delta the mine tailings are readily discriminated from the background estuarine sediments on the basis of visual logging of the core (laminations, colour), sediment grain size, sediment magnetic susceptibility and elemental geochemistry, especially concentrations of the heavy metals Cu, Zn and Pb. The high heavy metal concentrations are demonstrated by the very high contamination factors (CF [ 6) for Cu and Zn, with CF values mostly [50 for Cu for the mineimpacted sediments. Although the addition of mine waste into the King River catchment has ceased, the catchment continues to be a source of these heavy metals due to acid rock drainage and remobilisation of mine waste in storage in the river banks, river bed and delta. The addition of heavy metals to the harbour sourced from the Mount Lyell mines preceded the advent of direct tailings disposal into the Queen River in 1915 with the metals probably provided by acid rock drainage from the Mount Lyell mining area.

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Section: Study Areamentioning

confidence: 99%

“…These processes result in a significant proportion of dissolved Cu being removed from solution (Featherstone and O'Grady 1997). Subsequently, around 60% of the dissolved Cu input to Macquarie Harbour is complexed by strong ligands based on humic compounds and/or Fe/Mn oxyhydroxides (Eriksen et al 2001;Teasdale et al 2003).…”

Section: Study Areamentioning

confidence: 99%

Lithological and geochemical record of mining-induced changes in sediments from Macquarie Harbour, southwest Tasmania, Australia

et al. 2009

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“…Different chemical species of heavy metals have different activity, toxicity, and mobilization (Cai et al 2011;Lu et al 2010;Zheng et al 2013). The changing environment can also result in the transformation of heavy metals between particulate forms and dissolved form (Teasdale et al 2003;Yu and Hu 2008). Consequently, study of the speciation of heavy metals has become an important topic in aquatic research helping to identify anthropogenic sources of pollution as well as evaluation of potential ecological risk posed by heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Speciation and ecological risk of heavy metals and metalloid in the sediments of Zhalong Wetland in China

Zang

Xiao

et al. 2013

Int. J. Environ. Sci. Technol.

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A total of 271 sediments samples from the Zhalong Wetland were analyzed for concentration and distribution of Hg, Cd, As, Cu, Pb, Zn, Cr, and Zn; their speciation according to the modified European Community Bureau of Reference sequential extraction procedures and their ecological risk based on Lars Hakanson's potential ecological risk assessment and risk assessment code were made. The results can be summarized as the followings: (1) Concentrations of all metals measured were above soil background values of Songnen Plain, and their spatial distributions were distinctly different. The concentrations of metals (except Pb) were high in the east, followed by the north, and were relatively low in the core zone and south. The concentration of Pb was high in the north, south, and west, compared with low concentration in the core zone and east. (2) The dominant proportion of Pb, Zn, and Cr was in the residual fraction, suggesting that they were environmental stable. The concentrations of Cu and As in the reducible fraction, the concentration of Cd in the acidsoluble fraction, and the concentration of Hg in the oxidizable fraction were relatively high, indicating they had greater environmental effects. (3) The evaluation of the ecological risk showed that Cd, Hg, and As had relatively high ecological risk index, especially the ecological risk of Cd should be paid attention to. In general, the ecological risk of the heavy metals and metalloid by zone was experimental zone [ buffering zone [ ecological tourism zone [ core zone.

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“…However, some of the sediment-bound metals may be remobilized and released back to waters with a change of environmental conditions, and impose adverse effects on living organisms. Substantial evidences have been established that acid volatile sulfide (AVS), mainly composed of the reduced sulfur in FeS, would be an important control on heavy metal reactivity and toxicity in sediments (Di Toro et al 1992;Cooper & Morse 1998;Lee et al 2000;Teasdale et al 2003;Machado et al 2004). According to the AVS criteria, many divalent transition metals (e.g., Cd 2+ , Cu 2+ , Ni 2+ , Pb 2+ and Zn 2+ ) can replace iron cation from amorphous FeS in sediment to form very insoluble sulfide precipitates.…”

Section: Introductionmentioning

confidence: 99%

Heavy metals associated with reduced sulfur in sediments from different deposition environments in the Pearl River estuary, China

Chen

Yang

Zhang

et al. 2006

Environ Geochem Health

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Distribution of acid volatile sulfur (AVS) and the simultaneously extracted metals (SEM: Cu, Pb, Zn, Cd, Ni) in sediment profiles has been studied at five sites in Pearl River estuary, China. Of the five sampling locations, Nos.1 and 2 are in the middle shoal, Nos.3 and 4 in the west shoal and No. 5 locates to the south of the estuary. The AVS content in the sediments of the middle shoal varies in a small range (0.25-4.06 micromol g(-1)), while that of west shoal increases with depth from 0 to ultimately 26.09 micromol g(-1). The SEM concentration in the sediment profiles at location Nos. 1, 2 and 5 is generally in the range of 0.95+/-0.2 micromol g(-1) with a slight upward increase, while that in the sediment of west shallows are much higher (1.43-2.42 micromol g(-1)) with a significant upward increase, especially in the upper layer of ca. 15 cm. The observed upward increase of SEM content at all the sites implies that heavy metal contamination of sediment in the Pearl River estuary is increasing. Calculations of the excess heavy metal content which is defined by SEM-AVS molar difference suggests that the upper sediment in the Pearl River estuary, especially on the west shallows, could be a source of heavy metal contaminants and may cause toxicity to the benthos. The site-specific distribution patterns in the AVS and SEM profiles were interpreted according to the hydrogeochemistry of deposition environments.

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Geochemical cycling and speciation of copper in waters and sediments of Macquarie Harbour, Western Tasmania

Cited by 91 publications

References 37 publications

Lithological and geochemical record of mining-induced changes in sediments from Macquarie Harbour, southwest Tasmania, Australia

Lithological and geochemical record of mining-induced changes in sediments from Macquarie Harbour, southwest Tasmania, Australia

Speciation and ecological risk of heavy metals and metalloid in the sediments of Zhalong Wetland in China

Heavy metals associated with reduced sulfur in sediments from different deposition environments in the Pearl River estuary, China

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