Concentrations and physicochemical speciation of heavy metals in urban runoff sediment from São Gonçalo—Rio de Janeiro/Brazil

Neto, José Antônio Baptista; Rangel, Carlos Marclei Arruda; Fonseca, Estefan Monteiro da; Nascimento, Marília Teresa Lima do; Santos, Ana Dalva de Oliveira; Rodrigues, Bruno Cezar Baptista; Melo, Gustavo Vaz de

doi:10.1007/s12665-016-6000-z

Cited by 11 publications

(3 citation statements)

References 67 publications

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“…For example, while metal input from industrial and sewage sources can be concentrated during the river discharges from dry season, the urban runoff promoted by rainfall may result in high metal loading to this bay in the wet season. Many other areas of GB have been affected by these sources of metals (Fonseca et al, 2013;Silveira et al, 2013;Baptista Neto et al, 2016), which have stronger rainfall influence from January to March (Kjerfve et al, 1997). In the case of areas influenced by large seasonal variability of human occupation, Avelar et al (2000) detected the highest values Pb in P. perna in a nearby region (Ubatuba Bay, SE Brazil), during the vacation seasons (January and July), when this region attracts larger numbers of tourists.…”

Section: Discussionmentioning

confidence: 99%

Indicadores Biológicos De Ecossistemas Aquáticos

Lima¹,

Rocha²,

Santos³

et al. 2019

As Ciências Do Mar Em Todos Os Seus Aspectos

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Section: Discussionmentioning

confidence: 99%

Indicadores Biológicos De Ecossistemas Aquáticos

Lima¹,

Rocha²,

Santos³

et al. 2019

As Ciências Do Mar Em Todos Os Seus Aspectos

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“…Indeed, in the road environments, the main source reported was vehicular traffic [66]. Other studies (e.g., [5,67]) reported that the main sources of Zn, Pb, and Cd in road environments were associated with wear of engine parts, road demarcation paint, pavement, and road equipment. The findings of the worldwide review showed significant medium to strong positive correlations between ADT and the following HMs: ADT-Ni (rs = 0.598), ADT-Cu (rs = 0.554), and ADT-Pb (rs = 0.543).…”

Section: Worldwide Comparative Analysismentioning

confidence: 99%

Spatial Analysis of Heavy Metal Pollution in Road-Deposited Sediments Based on the Traffic Intensity of a Megacity

2023

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Population growth has led to the intensification of average daily traffic (ADT), highlighting vehicles as one of the major sources of heavy metal (HM) pollution in cities. The objective of this paper is to conduct a spatial analysis of the HM pollution associated with road-deposited sediments (RDSs), based on the ADT observed in the main roads of a Latin American megacity (Bogotá, Colombia). The following risk indices were considered: Geoaccumulation Index (Igeo), Integrated Pollution Index (IPI), Ecological Risk Index (ERI), Comprehensive Potential Ecological Risk Index (CERI), Hazard Index (HI), and Carcinogenic Risk Index (CRI). The findings confirm that a size fraction < 250 μm is the most suitable for studying the risk of HMs in the RDS from the indices considered. The best HMs indicative of the relationship with ADT are Ni, Cu, and Pb. The Pb is the HM of most attention, and Cr gains positions for its toxicity level during the evaluation of ecological, non-carcinogenic, and carcinogenic risks, respectively. Finally, the linear regression models developed between ADT and each of the risk indices considered have a better fit (R2 > 0.910) compared to the linear regression models developed between ADT and HM concentrations (R2 > 0.322).

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“…Guanabara Bay, an estuary of significant importance located on the Southeastern Brazilian coastline, is considered one of the most polluted estuaries in Brazil (Baptista Neto et al 2006). Located in the state of Rio de Janeiro and presenting high ecological and socio-economic relevance, it is exposed to several pollutant sources concerning numerous contaminants displaying toxic potential (Baptista Neto et al 2016;Carreira, Wagener & Readman 2004;Fernandez et al 2005). Studies in this estuary are relevant due to its enormous richness, productivity, biodiversity, and, especially, its importance in the maintenance and balance of other ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Estrogenic Activity and Endocrine Disruptor Compounds Determined in Guanabara Bay (Brazil) by Yeast Estrogen Screen Assays and Chemical Analyses

Nascimento¹,

Santos²,

Cunha³

et al. 2022

Anu. Inst. Geociênc.

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Studies assessing the presence of endocrine disrupting compounds in marine environments have increased in the last decades. In Brazil, the combination of poor sanitation conditions and low investment in sewage treatment plants leads to significant contamination of receiving waters. The risks of these micropollutants in the aquatic biota include biochemical and histopathological alterations of the liver, gonads, and kidneys, as well as, reproductive process and development modifications, and behavioral changes, among others. The aim of this study was to evaluate the quality of the surface and deep waters of Guanabara Bay, southeastern Brazil, regarding the presence of estrogenic substances. Acute toxicity assays were also conducted employing Vibrio fischeri. The estrogenic activity of the water samples was determined by Yeast Estrogen Screen assay and the quantification of the Bisphenol A, estriol, 17β-estradiol, and 17α-ethinylestradiol by high-performance liquid chromatography, using fluorescence and diode array detectors. Estrogenic activity ranged from 9 to 77 ng L-1 of estradiol equivalents. The highest micropollutants concentrations were detected for bisphenol A (298.5 and 465.5 ng L-1), followed by 17α-ethinylestradiol (248 and 256.9 ng L-1), estriol (70.7 and 179.6 ng L-1), and 17β-estradiol (167 and 174.8 ng L-1) for surface and deep waters, respectively. The findings indicate significant risks for the Guanabara Bay ecosystem. No acute toxicity effects were observed in the V. fisheri assay. These data reflect the current environmental degradation situation of the bay’s waters and highlight the need for the systematic monitoring of this important estuary.

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Concentrations and physicochemical speciation of heavy metals in urban runoff sediment from São Gonçalo—Rio de Janeiro/Brazil

Cited by 11 publications

References 67 publications

Indicadores Biológicos De Ecossistemas Aquáticos

Indicadores Biológicos De Ecossistemas Aquáticos

Spatial Analysis of Heavy Metal Pollution in Road-Deposited Sediments Based on the Traffic Intensity of a Megacity

Estrogenic Activity and Endocrine Disruptor Compounds Determined in Guanabara Bay (Brazil) by Yeast Estrogen Screen Assays and Chemical Analyses

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