Historical records, distributions and sources of mercury and zinc in sediments of East China sea: Implication from stable isotopic compositions

Zhang, Rui; Russell, James M.; Xiao, Xin; Zhang, Fan; Li, Tiegang; Li, Yong; Guan, Minglei; Han, Qi; Shen, Liya; Shu, Yujie

doi:10.1016/j.chemosphere.2018.04.100

Cited by 33 publications

(16 citation statements)

References 89 publications

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“…However, the metal loads delivered from sediments to the overlying water column account for less than 1% of sediment pool, suggesting that changes of the Cu and Zn isotope compositions due to such biogeochemical processes are negligible. This is coherent with other studies that have also pointed out that Cu and Zn isotope compositions in bottom or particulate sediments are essentially controlled by source mixing processes (Araújo et al, 2017a;Babcsányi et al, 2014;Chen et al, 2009;Guinoiseau et al, 2018;Thapalia et al, 2015;Zhang et al, 2018). The second criterion based on integrity of the stratigraphy is met since geochemical profiles of these trace metals in dated cores of Toulon bay were consistent with historical events of metal contamination indicating a good preservation of geochemical records (Tessier et al, 2011).…”

Section: Enrichment Factor Values and Spatial Distribution Of Trace Msupporting

confidence: 88%

“…Natural Zn inputs in coastal systems are associated to inorganic particles issued from weathered soils and lithogenic materials, detrital and authigenic organic matter and in-situ formed minerals, as carbonates and solid sulfide minerals (Araújo et al, 2017a;Mortimer and Rae, 2000;Zhang et al, 2018). The detrital-inorganic materials dominate sediment compositions of Toulon bay.…”

Section: Zn Isotope Systematicmentioning

confidence: 99%

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Copper, zinc and lead isotope signatures of sediments from a mediterranean coastal bay impacted by naval activities and urban sources

Araújo

Ponzevera

Briant

et al. 2019

Applied Geochemistry

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Toulon bay is severely impacted by metal contamination induced by past and recent naval activities. In this work, Cu, Zn and Pb isotope compositions and elemental concentrations of fifty-five surface sediments were determined in order to map the spatial distribution of anthropogenic and natural sources along this land-sea continuum. Two subsystems of Toulon Bay, the Small and Large bays, showed wellmarked patterns on metal contamination levels and isotope signatures for Cu and Pb. The Small bay had the highest metal concentrations, and displayed average Pb and Cu isotope compositions of 1.1664 ± 0.0043 (1s, expressed as 206Pb/207Pb ratios) and −0.17 ± 0.19‰ (1s, expressed as δ65CuNIST values), respectively. It contrasted with the Large bay, with moderate to pristine metal concentrations and average Pb and Cu isotope compositions of 1.1763 ± 0.0079 (1s) and +0.08 ± 0.23‰ (1s), respectively. Lead isotope systematics indicated a binary source mixing process involving industrial and natural sources, while Cu isotope systematics showed a ternary mixing process involving two distinct anthropogenic signatures, interpreted as associated to new diffuse anthropogenic sources and old warfare material. In contrast, Zn isotope compositions in the Small and Large bays were practically the same: +0.06 ± 0.05‰ and +0.06 ± 0.11‰ (1s, expressed δ66ZnJMC values), respectively, denoting an overlap between isotope signatures of natural and anthropogenic sources. This study presents the first detailed spatial distributions of Cu and Zn isotope compositions for an aquatic system, and demonstrates the feasibility to use Cu isotopes as tracers of anthropogenic sources in coastal environments. Highlights ► Cu isotope systematic show a mixing process of natural and anthropogenic sources. ► Low Cu contaminated sediments display δ 65 CuNIST values ranging from 0.0 to +0.2‰. ► Contaminated sediments by diffuse sources tend to negative δ 65 CuNIST values. ► Pb isotopes reveal mixing process involving industrial and natural sources. ► Zn isotope system does not allow identifying mixing source processes. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

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Section: Enrichment Factor Values and Spatial Distribution Of Trace Msupporting

confidence: 88%

Section: Zn Isotope Systematicmentioning

confidence: 99%

Copper, zinc and lead isotope signatures of sediments from a mediterranean coastal bay impacted by naval activities and urban sources

Araújo

Ponzevera

Briant

et al. 2019

Applied Geochemistry

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“…Yellow Sea (Kim et al, 2019); 47. East China Sea (Lim et al, 2017;Zhang H. X. et al, 2018;Zhang R. et al, 2018); 48. Shanghai (Yang H. D. et al, 2016); 49.…”

Section: Regional Comparison Of Global Mercury Depositionmentioning

confidence: 99%

“…Shanghai (Yang H. D. et al, 2016); 49. Chao Lake (Zhang H. X. et al, 2018;Zhang R. et al, 2018); 50. Dajiu Lake Basin (Li et al, 2016(Li et al, , 2017; 51.…”

Section: Regional Comparison Of Global Mercury Depositionmentioning

confidence: 99%

Mercury Deposition, Climate Change and Anthropogenic Activities: A Review

Zhang

2020

Front. Earth Sci.

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As a toxic and harmful global pollutant, mercury enters the environment through natural sources, and human activities. Based on large numbers of previous studies, this paper summarized the characteristics of mercury deposition and the impacts of climate change and human activities on mercury deposition from a global perspective. The results indicated that global mercury deposition changed synchronously, with more accumulation during the glacial period and less accumulation during the interglacial period. Mercury deposition fluctuated greatly during the Early Holocene but was stable and low during the Mid-Holocene. During the Late Holocene, mercury deposition reached the highest value. An increase in precipitation promotes a rise in forest litterfall Hg deposition. Nevertheless, there is a paucity of research on the mechanisms of mercury deposition affected by long-term humidity changes. Mercury accumulation was relatively low before the Industrial Revolution ca. 1840, while after industrialization, intensive industrial activities produced large amounts of anthropogenic mercury emissions and the accumulation increased rapidly. Since the 1970s, the center of global mercury production has gradually shifted from Europe and North America to Asia. On the scale of hundreds of thousands of years, mercury accumulation was greater in cold periods and less in warm periods, reflecting exogenous dust inputs. On millennial timescales, the correspondence between mercury deposition and temperature is less significant, as the former is more closely related to volcanic eruption and human activities. However, there remains significant uncertainties such as non-uniform distribution of research sites, lack of mercury deposition reconstruction with a long timescale and sub-century resolution, and the unclear relationship between precipitation change and mercury accumulation.

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“…Sediments are the main reservoir of trace metal contaminants in aquatic environments, and thus, frequently used to diagnostic the degree of anthropogenic inputs. In coastal areas, Cu and Zn isotope compositions of sediments are mainly controlled by mixing source processes of detrital-continental, marine-autochthonous and anthropogenic materials (Araújo et al, 2017b;Zhang et al, 2018). In Sepetiba bay (Brazil), a site historically contaminated by electroplating wastes, Zn isotope signatures of sediment samples fit well in a ternary mixing model involving detrital terrigenous, anthropogenic and marine authigenic sources (Araújo et al, 2017a,b).…”

Section: Introductionmentioning

confidence: 97%

Assessment of the metal contamination evolution in the Loire estuary using Cu and Zn stable isotopes and geochemical data in sediments

Araújo

Ponzevera

Briant

et al. 2019

Marine Pollution Bulletin

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In this work, a multi-elemental approach combining Cu and Zn stable isotopes is used to assess the metal contamination evolution in the Loire estuary bulk sediments. Elemental geochemical data indicate an increase of metal concentrations from the beginning of the industrial period peaking in the 1990s, followed by an attenuation of metal contamination inputs to the estuary. Zinc isotope compositions suggest a binary mixing process between Zn derived from terrigenous material and multi-urban anthropogenic sources. Copper isotope systematics indicate a single natural dominant source represented by weathered silicate particles from soils and rocks. This work demonstrates the applicability of Zn isotopes to identify anthropogenic Zn sources in coastal systems, even under a low to moderate degree of contamination. Further studies are required to constrain Cu sources and to elucidate possible effects of grain-size and mineralogy in the Cu isotope composition of sediment in the Loire estuary. Highlights ► Geochemical data and Cu and Zn isotopes were investigated in the Loire estuary. ► Cu and Zn isotope compositions of sediments vary in spatial and temporal scales. ► Zinc isotopes suggest a mixing process between terrigenous and urban sources. ► Cu isotopes indicate a natural dominant source represented by weathered material.

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Historical records, distributions and sources of mercury and zinc in sediments of East China sea: Implication from stable isotopic compositions

Cited by 33 publications

References 89 publications

Copper, zinc and lead isotope signatures of sediments from a mediterranean coastal bay impacted by naval activities and urban sources

Copper, zinc and lead isotope signatures of sediments from a mediterranean coastal bay impacted by naval activities and urban sources

Mercury Deposition, Climate Change and Anthropogenic Activities: A Review

Assessment of the metal contamination evolution in the Loire estuary using Cu and Zn stable isotopes and geochemical data in sediments

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