Calcareous algae bioclast contribution to sediment enrichment by arsenic on the Brazilian subtropical coast

Mirlean, Nicolai; Baisch, Paulo Roberto Martins; Travassos, Marcelo Poças; Nassar, Cristina Aparecida Gomes

doi:10.1007/s00367-010-0215-x

Cited by 33 publications

(15 citation statements)

References 28 publications

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“…These results are further evidence that As is linked to the geogenic source as other studies have reported (Mirlean et al 2011(Mirlean et al , 2012(Mirlean et al , 2013Cagnin et al 2017;Angeli et al 2019;Baeyens et al 2019). These authors attribute the high As levels found in Brazilian coastal sediments to the complex result of several interacting factors specific to this study area.…”

Section: Discussionsupporting

confidence: 86%

Geochemical behavior and remobilization potential of trace elements in surface sediments from the baixada santista industrial area, Southeastern Brazilian coast

Kim

Ferreira

Angeli

et al. 2020

J. Sediment. Environ.

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A three-stage sequential extraction procedure optimized by the European Community Bureau of Reference (BCR) was applied to assess the geochemical behavior and environmental mobility of As, Cr, Cu, Ni, Pb and Zn in surface sediments from two ecosystems under different anthropogenic influences, the Estuarine Complex of Santos and São Vicente (ECSSV) upper estuary (high anthropogenic influence) and the Bertioga channel (low anthropogenic influence), both of which are located on the coast of São Paulo, Brazil. In general, the difference between the regions varied considerably for almost all these elements, and the values for the Bertioga channel were always lower than those found in the upper estuary. Among all the elements, Zn showed the greatest mobility, being present mainly in the acid-soluble fraction. Arsenic and Pb were associated with the reducible fraction, and Cu and Ni in the oxidizable fraction. Meanwhile, Cr was mainly found in the residual fraction. Although previous studies, regarding total concentrations suggest the probable enrichment of Cu, Pb and Zn in the surface sediments of the ECSSV, according to our results and the Risk Assessment Code (RAC) analysis, only Zn presented a high risk of bioavailability, and the modified Risk Assessment Code (mRAC) only showed six samples in the inner estuary with a medium risk of mobilization. Therefore, this study can serve as a management tool and optimize the monitoring efforts of chemical pollution in the region. Keywords Estuarine complex of santos and são vicente • Potentially toxic elements • Sequential extraction • Risk assessment code (RAC) due to its strategic location between Santos Port and São Paulo city. The area hosts the largest industrial complex in the country (Cubatão Industrial Complex). It is already considered by many studies to be environmentally affected by industrial, urban and tourist activities, indicated mainly by contamination through potential harmful elements/compounds, like metals and organic compounds (e.g., Bordon et al. 2011; Martins et al. 2011; Buruaem et al. 2013; Kim et al. 2019) and effects on the biological community and mangroves (e.g., Cordeiro and Costa 2010; Cesar et al. 2014; Damasio et al. 2020). These activities have developed over the past century, and the increasing anthropogenic influence affects the resilience of the estuary (Buruaem et al. 2013; Cesar et al. 2014). However, while many studies have been conducted in the region that assess the levels of trace elements (e.g., Silva et al. 2011; Torres et al. 2015; Kim et al. 2016), studies on the environmental availability and geochemical behavior of these Communicated by M. V. Alves Martins

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Section: Discussionsupporting

confidence: 86%

Geochemical behavior and remobilization potential of trace elements in surface sediments from the baixada santista industrial area, Southeastern Brazilian coast

Kim

Ferreira

Angeli

et al. 2020

J. Sediment. Environ.

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“…Arsenic and Lead enrichment in Brazilian coastal environments were reported in several works as [79]- [84]. High levels of As (i.e.…”

Section: R Lima Barcellos Et Almentioning

confidence: 99%

Changes of Estuarine Sedimentation Patterns by Urban Expansion: The Case of Middle Capibaribe Estuary, Northeastern Brazil

Barcellos¹,

Figueira²,

França³

et al. 2017

IJG

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The aim of this study is to describe the sedimentary evolution occurred during the last 200-years in the middle Capibaribe Estuary by mean of the sedimentary analysis (magnetic susceptibility, grain size, calcium carbonate, total organic matter-TOM) and geochemical parameters (sedimentation rates, heavy metal concentrations, enrichment and contamination factor) along a core. The core recorded four units and the measured sedimentation rate was 0.52 cm cm•y −1 . The first unit, dating before 1812, showed environmental characteristics of mangrove with predominance of fine sediments, high total organic matter percentages and heavy metal concentrations probably from natural sources. The second unit, from 1812 to 1937, showed a slight increase in sand percentages and decrease in fine fraction, TOM contents and heavy metals concentrations. These characteristics may be associated with the urban expansion processes and the presence of monoculture of sugar cane occurred in the middle Capibaribe Estuary. The third unit, from 1937 to 2004, showed the highest sand percentages of the core, characterizing a unit exclusively of sand with low fine fractions percentages, total organic matter contents and heavy metals concentrations. This unit represented the intensification of the urban processes expansion of Recife City. The fourth unit showed increases in fine fraction sedimentation, TOM contents and heavy metals concentrations. This new change in sedimentation probably is consequence of rebirth of marginal estuarine banks by mangrove vegetation, due to environmental projects carried out by Recife Prefecture in the early 2000's. It was not possible to register the anthropic contamination to middle estuary area probably due to the Barreiras Formation influences in the metal concentration records, masking the anthropic contamination inputs in estuarine region. Although, lead and arsenic showing an enrichment level indicating anthropic contamination.

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“…The average content in marine shale is as much as 13 mg kg −1 Turekian and Wedepohl (1961) b Deep-sea sediments, presented by Turekian and Wedepohl (1961) c Average shale, presented by Wedepohl (1971) (Chester 1990). In contrast to continental deposits, the elevated concentrations of As in marine sediments might be explained by the preservation of charged As species (arsenites and arsenates) by iron oxyhydroxides under oxidizing, low alkaline conditions (Mirlean et al 2011). Phosphoric fertilizers are among the principal sources or arsenic pollution in certain surroundings (Mirlean and Roisenberg 2006) with major attention usually directed at sources of contamination like phosphogypsum storages or warehouses of phosphoric fertilizers (Rutherford et al 1994).…”

Section: Assessment Of Regional Background and Evaluation Of Sediment Contaminationmentioning

confidence: 99%

Statistical assessment of background levels for metal contamination from a subtropical estuarine system in the SW Atlantic (Paranaguá Estuarine System, Brazil)

Angeli

Kim

Paladino

et al. 2020

J. Sediment. Environ.

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Trace metal background levels determination is essential for the proper assessment of the contamination status of a region. This study aims to integrate geochemical and statistical methods for the reliable determination of background levels, applying it to the sediments of the Paranaguá Estuarine System (PES), a large subtropical estuarine system of international importance since it is considered a World Heritage Site and Biosphere Reserve and it harbors the main South American grain shipping port. Prediction Interval (PI) was applied as a chemometric tool to evaluate metal enrichment without a reference level and assess a regional background. Moreover, the sources and concentrations of major and trace elements were assessed in surface sediments from 135 sampling sites located in the Paranaguá Estuarine System (PES). PES surface sediment elements concentrations may be considered lower than those found in other anthropized environments indicating no significant contamination for most of the studied elements (Cr, Cu, Ni, Pb and Zn). The levels of As in the PES may be related to the geochemical characteristics of the adjacent drainage basin and the occurrence of phosphate rocks, which contain As in their composition. However, As was also influenced by anthropogenic inputs either from agricultural activities or fertilizer industries working with mining phosphate in the region. KeywordsMajor and trace elements • World Heritage Listed area • Background levels • Chemometric tool

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Calcareous algae bioclast contribution to sediment enrichment by arsenic on the Brazilian subtropical coast

Cited by 33 publications

References 28 publications

Geochemical behavior and remobilization potential of trace elements in surface sediments from the baixada santista industrial area, Southeastern Brazilian coast

Geochemical behavior and remobilization potential of trace elements in surface sediments from the baixada santista industrial area, Southeastern Brazilian coast

Changes of Estuarine Sedimentation Patterns by Urban Expansion: The Case of Middle Capibaribe Estuary, Northeastern Brazil

Statistical assessment of background levels for metal contamination from a subtropical estuarine system in the SW Atlantic (Paranaguá Estuarine System, Brazil)

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