Urban activity and mercury contamination in estuarine and marine sediments (Southern Brazil)

Nicolai Mirlean; Lauro Calliari; Paulo Baisch; Ester Loitzenbauer; Evgueni Shumilin

doi:10.1007/s10661-008-0558-1

Urban activity and mercury contamination in estuarine and marine sediments (Southern Brazil)

Nicolai Mirlean, Lauro Calliari, Paulo Baisch, Ester Loitzenbauer, Evgueni Shumilin

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The distribution of mercury in sediments of the Patos Lagoon estuary and nearby coastal marine deposits has been investigated for the period 1998-2008. Polluted urban soils and coastal reclamation fills are the principal sources of high mercury concentrations for shallow estuarine sediments. The shallow sediments that form near the urban area enter the navigation canal and are transported into the ocean. The mercury concentration in sediments of the navigation canal has considerably increased since 2004, due to intense reconstruction activity in the urban area. Periodic dredging of the canal strengthens the preconditions for coastal marine sediment contamination by mercury. However, this does not occur because the resuspended dredged sediments are significantly diluted by natural suspended particulate matter.

Original language	English
Pages (from-to)	583-589
Number of pages	7
Journal	Environmental Monitoring and Assessment
Volume	157
Issue number	1-4
DOIs	https://doi.org/10.1007/s10661-008-0558-1
State	Published - 2009
Externally published	Yes

Keywords

Coastal marine sediments
Estuarine sediments
Mercury
Monitoring
Navigation canal
PatosLagoon (Brazil)

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10.1007/s10661-008-0558-1

Cite this

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title = "Urban activity and mercury contamination in estuarine and marine sediments (Southern Brazil)",

abstract = "The distribution of mercury in sediments of the Patos Lagoon estuary and nearby coastal marine deposits has been investigated for the period 1998-2008. Polluted urban soils and coastal reclamation fills are the principal sources of high mercury concentrations for shallow estuarine sediments. The shallow sediments that form near the urban area enter the navigation canal and are transported into the ocean. The mercury concentration in sediments of the navigation canal has considerably increased since 2004, due to intense reconstruction activity in the urban area. Periodic dredging of the canal strengthens the preconditions for coastal marine sediment contamination by mercury. However, this does not occur because the resuspended dredged sediments are significantly diluted by natural suspended particulate matter.",

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T1 - Urban activity and mercury contamination in estuarine and marine sediments (Southern Brazil)

AU - Mirlean, Nicolai

AU - Calliari, Lauro

AU - Baisch, Paulo

AU - Loitzenbauer, Ester

AU - Shumilin, Evgueni

N1 - Funding Information: Acknowledgements This study was supported by a grant from the Brazilian National Research Council (CNPq).

PY - 2009

Y1 - 2009

N2 - The distribution of mercury in sediments of the Patos Lagoon estuary and nearby coastal marine deposits has been investigated for the period 1998-2008. Polluted urban soils and coastal reclamation fills are the principal sources of high mercury concentrations for shallow estuarine sediments. The shallow sediments that form near the urban area enter the navigation canal and are transported into the ocean. The mercury concentration in sediments of the navigation canal has considerably increased since 2004, due to intense reconstruction activity in the urban area. Periodic dredging of the canal strengthens the preconditions for coastal marine sediment contamination by mercury. However, this does not occur because the resuspended dredged sediments are significantly diluted by natural suspended particulate matter.

AB - The distribution of mercury in sediments of the Patos Lagoon estuary and nearby coastal marine deposits has been investigated for the period 1998-2008. Polluted urban soils and coastal reclamation fills are the principal sources of high mercury concentrations for shallow estuarine sediments. The shallow sediments that form near the urban area enter the navigation canal and are transported into the ocean. The mercury concentration in sediments of the navigation canal has considerably increased since 2004, due to intense reconstruction activity in the urban area. Periodic dredging of the canal strengthens the preconditions for coastal marine sediment contamination by mercury. However, this does not occur because the resuspended dredged sediments are significantly diluted by natural suspended particulate matter.

KW - Coastal marine sediments

KW - Estuarine sediments

KW - Mercury

KW - Monitoring

KW - Navigation canal

KW - PatosLagoon (Brazil)

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DO - 10.1007/s10661-008-0558-1

M3 - Artículo

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EP - 589

JO - Environmental Monitoring and Assessment

JF - Environmental Monitoring and Assessment

IS - 1-4

ER -

Urban activity and mercury contamination in estuarine and marine sediments (Southern Brazil)

Abstract

Keywords

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