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    Rights statement: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science and Technology, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.est.0c05954

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Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments

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Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments. / Zhou, C.; Gao, Y.; Gaulier, C.; Luo, M.; Zhang, X.; Bratkic, A.; Davison, W.; Baeyens, W.

In: Environmental Science and Technology, Vol. 54, No. 23, 01.12.2020, p. 15151-15161.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Zhou, C, Gao, Y, Gaulier, C, Luo, M, Zhang, X, Bratkic, A, Davison, W & Baeyens, W 2020, 'Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments', Environmental Science and Technology, vol. 54, no. 23, pp. 15151-15161. https://doi.org/10.1021/acs.est.0c05954

APA

Zhou, C., Gao, Y., Gaulier, C., Luo, M., Zhang, X., Bratkic, A., Davison, W., & Baeyens, W. (2020). Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments. Environmental Science and Technology, 54(23), 15151-15161. https://doi.org/10.1021/acs.est.0c05954

Vancouver

Zhou C, Gao Y, Gaulier C, Luo M, Zhang X, Bratkic A et al. Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments. Environmental Science and Technology. 2020 Dec 1;54(23):15151-15161. https://doi.org/10.1021/acs.est.0c05954

Author

Zhou, C. ; Gao, Y. ; Gaulier, C. ; Luo, M. ; Zhang, X. ; Bratkic, A. ; Davison, W. ; Baeyens, W. / Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments. In: Environmental Science and Technology. 2020 ; Vol. 54, No. 23. pp. 15151-15161.

Bibtex

@article{95aa2b710ffb451aa12e0f0a18a0f164,
title = "Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments",
abstract = "Different mobilization mechanisms control the metal distribution in surface sediments of the Belgium coastal zone (BCZ) and the anoxic Gotland basin (GB). This mobilization was studied using DGT (diffusive gradients in thin films): vertical one-dimensional (1D) profiles of Cd, Co, Cu, Fe, Mn, Ni, Pb, and Zn were measured at 5 mm intervals, while two-dimensional (2D) high-resolution (100 μm) images of smaller zones of the sediment profile were obtained on separate DGT probes. Removal of dissolved Cd, Cu, and Pb in BCZ sediments caused steep vertical gradients at the sediment-water interface that were well replicated in 1D profiles and 2D images. While 1D profiles showed apparent coincident maxima of Co, Mn, and Fe, 2D images revealed mutually exclusive Co and Fe mobilization. Correlation analysis supported this observation and showed a consistent linkage between Co and Mn. Sharp maxima of some metals in the vertical 1D profiles of GB sediment were attributed to localized mobilization in microniches. Examination of an ∼1 mm diameter Cu and Ni maximum in 2D, defined by ∼300 data points, showed that the metals were supplied from localized decomposition of reactive organic material, rather than from reductively dissolving Fe or Mn oxides, and that they were removed as their sulfides. ",
keywords = "Cobalt, Dissolution, Iron oxides, Lead removal (water treatment), Submarine geology, Sulfur compounds, Trace elements, Correlation analysis, Diffusive gradients in thin films, Metal distributions, Organic materials, Sediment water interface, Surface sediments, Two Dimensional (2 D), Vertical gradients, Sediments",
author = "C. Zhou and Y. Gao and C. Gaulier and M. Luo and X. Zhang and A. Bratkic and W. Davison and W. Baeyens",
note = "This document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science and Technology, copyright {\textcopyright} American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.est.0c05954",
year = "2020",
month = dec,
day = "1",
doi = "10.1021/acs.est.0c05954",
language = "English",
volume = "54",
pages = "15151--15161",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "23",

}

RIS

TY - JOUR

T1 - Advances in Understanding Mobilization Processes of Trace Metals in Marine Sediments

AU - Zhou, C.

AU - Gao, Y.

AU - Gaulier, C.

AU - Luo, M.

AU - Zhang, X.

AU - Bratkic, A.

AU - Davison, W.

AU - Baeyens, W.

N1 - This document is the Accepted Manuscript version of a Published Work that appeared in final form in Environmental Science and Technology, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.est.0c05954

PY - 2020/12/1

Y1 - 2020/12/1

N2 - Different mobilization mechanisms control the metal distribution in surface sediments of the Belgium coastal zone (BCZ) and the anoxic Gotland basin (GB). This mobilization was studied using DGT (diffusive gradients in thin films): vertical one-dimensional (1D) profiles of Cd, Co, Cu, Fe, Mn, Ni, Pb, and Zn were measured at 5 mm intervals, while two-dimensional (2D) high-resolution (100 μm) images of smaller zones of the sediment profile were obtained on separate DGT probes. Removal of dissolved Cd, Cu, and Pb in BCZ sediments caused steep vertical gradients at the sediment-water interface that were well replicated in 1D profiles and 2D images. While 1D profiles showed apparent coincident maxima of Co, Mn, and Fe, 2D images revealed mutually exclusive Co and Fe mobilization. Correlation analysis supported this observation and showed a consistent linkage between Co and Mn. Sharp maxima of some metals in the vertical 1D profiles of GB sediment were attributed to localized mobilization in microniches. Examination of an ∼1 mm diameter Cu and Ni maximum in 2D, defined by ∼300 data points, showed that the metals were supplied from localized decomposition of reactive organic material, rather than from reductively dissolving Fe or Mn oxides, and that they were removed as their sulfides.

AB - Different mobilization mechanisms control the metal distribution in surface sediments of the Belgium coastal zone (BCZ) and the anoxic Gotland basin (GB). This mobilization was studied using DGT (diffusive gradients in thin films): vertical one-dimensional (1D) profiles of Cd, Co, Cu, Fe, Mn, Ni, Pb, and Zn were measured at 5 mm intervals, while two-dimensional (2D) high-resolution (100 μm) images of smaller zones of the sediment profile were obtained on separate DGT probes. Removal of dissolved Cd, Cu, and Pb in BCZ sediments caused steep vertical gradients at the sediment-water interface that were well replicated in 1D profiles and 2D images. While 1D profiles showed apparent coincident maxima of Co, Mn, and Fe, 2D images revealed mutually exclusive Co and Fe mobilization. Correlation analysis supported this observation and showed a consistent linkage between Co and Mn. Sharp maxima of some metals in the vertical 1D profiles of GB sediment were attributed to localized mobilization in microniches. Examination of an ∼1 mm diameter Cu and Ni maximum in 2D, defined by ∼300 data points, showed that the metals were supplied from localized decomposition of reactive organic material, rather than from reductively dissolving Fe or Mn oxides, and that they were removed as their sulfides.

KW - Cobalt

KW - Dissolution

KW - Iron oxides

KW - Lead removal (water treatment)

KW - Submarine geology

KW - Sulfur compounds

KW - Trace elements

KW - Correlation analysis

KW - Diffusive gradients in thin films

KW - Metal distributions

KW - Organic materials

KW - Sediment water interface

KW - Surface sediments

KW - Two Dimensional (2 D)

KW - Vertical gradients

KW - Sediments

U2 - 10.1021/acs.est.0c05954

DO - 10.1021/acs.est.0c05954

M3 - Journal article

VL - 54

SP - 15151

EP - 15161

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 23

ER -