Assessment of bioavailability and potential toxicity of Cu, Zn and Pb, a case study in Jurujuba Sound, Rio de Janeiro, Brazil

Abuchacra, Paula Ferreira Falheiro; Aguiar, V.M.C.; Abuchacra, Rodrigo Coutinho; Neto, José Antônio Baptista; Oliveira, Allan

doi:10.1016/j.marpolbul.2015.08.012

Cited by 15 publications

(5 citation statements)

References 70 publications

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“…Twardowska and Kysiol (2002) found that zinc binds to organic matter mainly through electrostatic forces, indicating that an important fraction of the organic matter-bound metal is determined in the exchangeable fraction. The joint addition of both Zn and Pb resulted in a lower binding of Zn to iron and manganese oxides, in relation to the TZn treatment, which could be explained by the greater affinity of Pb for amorphous Fe hydroxides than other metals like Zn (McBride 1989;Tessier 1992;Jain and Ram 1997;Abuchacra et al 2015). The affinity of Pb for organic matter and for iron and manganese oxides of sediments has been widely recognized.…”

Section: Discussionmentioning

confidence: 99%

“…The prevailing association of Pb with organic matter-sulfide fraction could prevent the dispersal of this metal in the environment. Metals in the organic fraction are not considered to be very mobile or available due to their association with humic substances of high molecular weight Table 3 Net primary production (NPP) (g/m 2 ) at 63 days, zinc and lead concentrations in shoot, rhizome and root (μg/g) and bioconcentration factor (BCF: metal concentration ratio of plant roots to sediment) and translocation factor (TF: metal concentration ratio of plants shoots to roots) for each metal in Schoenoplectus californicus Author's personal copy (Tordoff et al 2000;Rendina and Fabrizio de Iorio 2012;Abuchacra et al 2015), so this favors the reestablishment of vegetation on contaminated sites.…”

Section: Discussionmentioning

confidence: 99%

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Effect of the combined addition of Zn and Pb on partitioning in sediments and their accumulation by the emergent macrophyte Schoenoplectus californicus

Arreghini

Cabo

Serafini

et al. 2017

Environ Sci Pollut Res

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Wetlands usually provide a natural mechanism that diminishes the transport of toxic compounds to other compartments of the ecosystem by immobilization and accumulation in belowground tissues and/or soil. This study was conducted to assess the ability of Schoenoplectus californicus growing in natural marsh sediments, with zinc and lead addition, to tolerate and accumulate these metals, taking account of the metal distribution in the sediment fractions. The Zn and Pb were mainly found in available (exchangeable) and potentially available (bound to organic matter) forms, respectively. The absorption of Zn and Pb by plants increased in sediments with added metals. Both metals were largely retained in roots (translocation factor < 1). Lead rhizome concentrations only increased significantly in treatments with high doses of metal independently of added Zn. The addition of Zn increased its concentration in roots and shoots significantly, while its concentration in rhizomes only increased when both metals were added together. Zinc concentration in shoots did not reach the toxic level for plants. Zinc and Pb concentrations in roots were high, but they were not sufficient to reduce biomass growth.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of the combined addition of Zn and Pb on partitioning in sediments and their accumulation by the emergent macrophyte Schoenoplectus californicus

Arreghini

Cabo

Serafini

et al. 2017

Environ Sci Pollut Res

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“…This setting shows that the bay acts as a sink, especially for fine sediment particles. Nowadays, considering the alarming environmental quality of Guanabara Bay Fonseca et al, 2013;Abuchacra et al, 2015;Cordeiro et al, 2015;Fistarol et al, 2015;Abreu et al, 2016;Aguiar et al, 2016;Carvalho and Baptista Neto, 2016;Silva et al, 2016;Soares-Gomes et al, 2016), we assume that the bay acts as a sink not only for sediments but also for pollutants.…”

Section: Discussionmentioning

confidence: 99%

“…Amador (1997Amador ( , 2012 suggested that Guanabara Bay doubled in size during the Maximum Holocene Transgression (Angulo et al, 2006) and showed that it was drastically altered by post-colonial human induced activities. Guanabara Bay is surrounded by the metropolitan area of Rio de Janeiro and is considered a highly impacted environment, particularly in view of industrial activities, urban and agricultural runoff, trace metals, sewage discharge, anthropogenic debris, dredging, coastal interventions and landfills Fonseca et al, 2013;Abuchacra et al, 2015;Cordeiro et al, 2015;Fistarol et al, 2015;Aguiar et al, 2016;Carvalho and Baptista Neto, 2016;Silva et al, 2016;Soares-Gomes et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Northeast Guanabara Bay and Coastal Plain Holocene Sedimentary Evolution (Brazil): A Contribution

et al. 2017

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Sedimentological and radiocarbon investigations are part of an ongoing research on the Bay-head delta of northeast Guanabara Bay, Rio de Janeiro State. Sediment accumulation indicates that the Holocene infill of the bay-head delta started around 8.2 kyr BP and was not in pace with the eustatic sea-level rise. Sediment accumulation was faster during the transgressive phase (0.56 cm.yr -1 ). However, during the regressive phase, progradation driven by baselevel fall was predominant over vertical sediment accumulation (0.02 cm.yr -1 ). Based on coring, three sedimentary units were defined: fluvial sands (U1), estuarine deposits (U2) and fluvial mud (U3).

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“…The lowest concentration of 6 μg.mL -1 is the maximum allowed content of Pb (the most toxic metal tested) in human blood, according to Brazilian laws [ 20 ]. The maximum concentration of 50 μg.mL -1 is the Pb content found in the sediments of Sepetiba Bay, according to Abuchacra et al [ 21 ].…”

Section: Methodsmentioning

confidence: 99%

Potential application of Pseudomonas stutzeri W228 for removal of copper and lead from marine environments

et al. 2020

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High concentrations of metals in the environment alter bacterial diversity, selecting resistant and tolerant species. The study evaluated the selection of a potential bacterial strain from Sepetiba Bay-Rio de Janeiro, Brazil marine sediments to remove Cu and Pb. The bacterial strain isolated from the sediments was used in three different bioassays: (1) Cu at concentrations of 0 (control), 6 and 50 μg.mL -1 ; (2) Pb at concentrations of 0 (control), 6 and 50 μg.mL -1 ; (3) Cu + Pb in concentrations of 3 μg.mL -1 Cu + 3 μg.mL -1 Pb (6 μg.mL -1 ) and 25 μg.mL -1 Cu + 25 μg.mL -1 Pb (50 μg.mL -1 ). The number of cells and the enzymatic activities of dehydrogenases and esterases were quantified. Results of taxonomic identification indicated the selection of the Pseudomonas stutzeri W228 strain, showing a greater degree of similarity (±73%) with the database used. There was no significant variation in the number of cells, 10 8 cells.mL -1 , which represents a high biomass production in the presence of stressors. However, we observed a reduction in dehydrogenase activity at all tested concentrations of Cu, Pb and Cu + Pb. The activity of esterase increased, indicating a higher energy demand to complete the bacterial life cycle. The study showed significant results for the absorption of Pb by the extracellular polymeric substances (EPS) and the efflux of Cu. The capacity of Pb absorption by EPS can be considered a resistance mechanism, as well as the efflux of Cu, so that the available EPS sites could be occupied by the most toxic ions demonstrating that Pseudomonas stutzeri is resistant to Pb and Cu.

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Assessment of bioavailability and potential toxicity of Cu, Zn and Pb, a case study in Jurujuba Sound, Rio de Janeiro, Brazil

Cited by 15 publications

References 70 publications

Effect of the combined addition of Zn and Pb on partitioning in sediments and their accumulation by the emergent macrophyte Schoenoplectus californicus

Effect of the combined addition of Zn and Pb on partitioning in sediments and their accumulation by the emergent macrophyte Schoenoplectus californicus

Northeast Guanabara Bay and Coastal Plain Holocene Sedimentary Evolution (Brazil): A Contribution

Potential application of Pseudomonas stutzeri W228 for removal of copper and lead from marine environments

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