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• W2998705282 endingPage "136354" @default.
• W2998705282 startingPage "136354" @default.
• W2998705282 abstract "The Macleay River in eastern Australia is severely impacted by historic stibnite- and arsenopyrite-rich mine-tailings. We explore the partitioning, speciation, redox-cycling, mineral associations and mobility of antimony and arsenic along >70 km reach of the upper Macleay River. Elevated Sb/As occur throughout the active channel-zone and in floodplain pockets up to the regolith margin, indicating broad dispersal during floods. Sb concentrations in bulk-sediments decay exponentially downstream more efficiently than As, likely reflecting sediment dilution, hydraulic sorting and comparatively greater leaching of (more mobile) Sb(V) species. However, Sb in bulk-sediments becomes proportionally more bio-available downstream. Sb(V) and As(V) species dominate stream fine-grained (<180 μm) bulk-sediments, reflecting oxidative weathering downstream. Increasing poorly-crystalline Fe(III) [Fe(III)HCl] in bulk-sediments also indicates progressive oxidative weathering of Fe(II)-bearing minerals downstream and significant (P < .05) correlations exist between PO4−3-exchangeable As and Sb fractions and Fe(III)HCl. Accumulations of poorly-crystalline Fe(III) precipitates (mainly ferrihydrite/feroxyhyte) occur intermittently in hyporheic-zone seeps and are enriched in As relative to Sb and contain some As(III) and Sb(III) (~30–40%). There is dynamic in-stream redox-cycling of both Sb and As, with localised S-coordinated As and Sb species re-forming in organic-rich, hyporheic sediments subject to contemporary sulfidogenesis. Sb [mainly Sb(V)] is comparatively more mobile in hyporheic and surface waters under oxic conditions, whereas As [mainly As(III)] is more mobile in hyporheic porewaters subject to reducing/sulfidogenic conditions. Repeat water-leaching of bulk-sediments confirms that Sb is proportionally more mobile than As. Mean concentrations of Sb in river water 168 km downstream from the mine are significantly (P < .05) higher than As, while Kd data indicate Sb is more strongly partitioned to the aqueous phase than As. Although the (mainly) oxic flow path of this river favours aqueous Sb mobility compared to As, localised redox-driven shifts in speciation of both elements strongly influence their respective mobility and partitioning." @default.
• W2998705282 created "2020-01-10" @default.
• W2998705282 creator A5021493294 @default.
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• W2998705282 date "2020-03-01" @default.
• W2998705282 modified "2023-10-14" @default.
• W2998705282 title "Antimony and arsenic speciation, redox-cycling and contrasting mobility in a mining-impacted river system" @default.
• W2998705282 cites W1645325987 @default.
• W2998705282 cites W1667273974 @default.
• W2998705282 cites W1965456457 @default.
• W2998705282 cites W1969270826 @default.
• W2998705282 cites W1971622139 @default.
• W2998705282 cites W1972284414 @default.
• W2998705282 cites W1973774177 @default.
• W2998705282 cites W1976918501 @default.
• W2998705282 cites W1977068323 @default.
• W2998705282 cites W1977897527 @default.
• W2998705282 cites W1983971224 @default.
• W2998705282 cites W1994367365 @default.
• W2998705282 cites W1994425215 @default.
• W2998705282 cites W1997124209 @default.
• W2998705282 cites W2000855325 @default.
• W2998705282 cites W2014693431 @default.
• W2998705282 cites W2014917322 @default.
• W2998705282 cites W2016419126 @default.
• W2998705282 cites W2021255950 @default.
• W2998705282 cites W2021956147 @default.
• W2998705282 cites W2022150898 @default.
• W2998705282 cites W2022181056 @default.
• W2998705282 cites W2024467378 @default.
• W2998705282 cites W2025896539 @default.
• W2998705282 cites W2026976284 @default.
• W2998705282 cites W2032988771 @default.
• W2998705282 cites W2039242149 @default.
• W2998705282 cites W2040662953 @default.
• W2998705282 cites W2045335122 @default.
• W2998705282 cites W2046812740 @default.
• W2998705282 cites W2047371588 @default.
• W2998705282 cites W2065687349 @default.
• W2998705282 cites W2070227796 @default.
• W2998705282 cites W2070262867 @default.
• W2998705282 cites W2070808944 @default.
• W2998705282 cites W2071937269 @default.
• W2998705282 cites W2076611735 @default.
• W2998705282 cites W2079744407 @default.
• W2998705282 cites W2084821401 @default.
• W2998705282 cites W2088403429 @default.
• W2998705282 cites W2089310985 @default.
• W2998705282 cites W2091486080 @default.
• W2998705282 cites W2094123783 @default.
• W2998705282 cites W2095374472 @default.
• W2998705282 cites W2109862952 @default.
• W2998705282 cites W2121511629 @default.
• W2998705282 cites W2121884819 @default.
• W2998705282 cites W2124667203 @default.
• W2998705282 cites W2126580773 @default.
• W2998705282 cites W2128834714 @default.
• W2998705282 cites W2132814927 @default.
• W2998705282 cites W2149602337 @default.
• W2998705282 cites W2156057423 @default.
• W2998705282 cites W2165399803 @default.
• W2998705282 cites W2175039220 @default.
• W2998705282 cites W2288736752 @default.
• W2998705282 cites W2314651216 @default.
• W2998705282 cites W2315386127 @default.
• W2998705282 cites W2315521974 @default.
• W2998705282 cites W2325486735 @default.
• W2998705282 cites W2331559689 @default.
• W2998705282 cites W2337217389 @default.
• W2998705282 cites W2461451335 @default.
• W2998705282 cites W2588234300 @default.
• W2998705282 cites W2600871520 @default.
• W2998705282 cites W2606329052 @default.
• W2998705282 cites W2768223673 @default.
• W2998705282 cites W2774978077 @default.
• W2998705282 cites W2779894825 @default.
• W2998705282 cites W2781655503 @default.
• W2998705282 cites W2901808061 @default.
• W2998705282 cites W2937376481 @default.
• W2998705282 cites W2945745362 @default.
• W2998705282 cites W2971080356 @default.
• W2998705282 doi "https://doi.org/10.1016/j.scitotenv.2019.136354" @default.
• W2998705282 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32050372" @default.
• W2998705282 hasPublicationYear "2020" @default.
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