Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China

Shouliang Huo; Jingtian Zhang; Kevin M. Yeager; Beidou Xi; Yanwen Qin; Zhuoshi He; Fengchang Wu

doi:10.1016/j.jes.2014.12.003

Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China

Shouliang Huo
, Jingtian Zhang
, Kevin M. Yeager
, Beidou Xi
, Yanwen Qin
, Zhuoshi He
, Fengchang Wu

Earth and Environmental Sciences

Producción científica: Article › revisión exhaustiva

48 Citas (Scopus)

Resumen

The technique of DGT (diffusive gradients in thin films) using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT_1.92>DGT_0.78>DGT_0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments.

Idioma original	English
Páginas (desde-hasta)	1-11
Número de páginas	11
Publicación	Journal of Environmental Sciences (China)
Volumen	31
DOI	https://doi.org/10.1016/j.jes.2014.12.003
Estado	Published - may 1 2015

Nota bibliográfica

Publisher Copyright:
© 2015.

Financiación

This study is supported by the Mega-projects of Science Research for Water Environment Improvement (No. 2012ZX07101-002 ) and the National Natural Science Foundation of China (No. 41303085 ).

Financiadores	Número del financiador
Mega-projects of Science Research for Water Environment Improvement	2012ZX07101-002
National Natural Science Foundation of China (NSFC)	41303085

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
General Environmental Science

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title = "Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China",

abstract = "The technique of DGT (diffusive gradients in thin films) using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT1.92>DGT0.78>DGT0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments.",

keywords = "DGT (diffusive gradients in thin films), Heavy metals, Sulfidization process",

author = "Shouliang Huo and Jingtian Zhang and Yeager, \{Kevin M.\} and Beidou Xi and Yanwen Qin and Zhuoshi He and Fengchang Wu",

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AU - Huo, Shouliang

AU - Zhang, Jingtian

AU - Yeager, Kevin M.

AU - Xi, Beidou

AU - Qin, Yanwen

AU - He, Zhuoshi

AU - Wu, Fengchang

PY - 2015/5/1

Y1 - 2015/5/1

N2 - The technique of DGT (diffusive gradients in thin films) using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT1.92>DGT0.78>DGT0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments.

AB - The technique of DGT (diffusive gradients in thin films) using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT1.92>DGT0.78>DGT0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments.

KW - DGT (diffusive gradients in thin films)

KW - Heavy metals

KW - Sulfidization process

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SN - 1001-0742

VL - 31

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EP - 11

JO - Journal of Environmental Sciences (China)

JF - Journal of Environmental Sciences (China)

ER -

Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China

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Financiación

ASJC Scopus subject areas

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