Use of GIS for the evaluation of heavy metal contamination in the Cunha Canal watershed and west of the Guanabara Bay, Rio de Janeiro, RJ

Borges, Renata Coura; Caldas, Vanessa Godoy; Lamego, Fernando; Ferreira, Marcos Manoel; Lapa, Celso Marcelo Franklin

doi:10.1016/j.marpolbul.2014.10.033

Cited by 30 publications

(15 citation statements)

References 13 publications

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“…Sabadini-Santos et al, 2014) mainly due to domestic effluent, besides the presence of yacht clubs and mariculture activities. Sector 5 is located in the Harbor of Rio de Janeiro (HRJ), where trace metal concentrations are associated with shipping activities and the outlet of one of the most polluted rivers of the catchment basin (Borges et al, 2014).…”

Section: Sampling Designmentioning

confidence: 99%

“…Study area GB is a 384 km 2 eutrophic coastal bay located in Southeast Brazil. The rivers and channels that discharge into the bay cross greatly urbanized areas, receiving all kinds of effluents (Faria and Sanchez, 2001;Fonseca et al, 2014;Borges et al, 2014). Its drainage basin receives polluted effluents from about 6000 industries, 2 airports, 2 commercial harbors and 15 oil terminals located in its vicinity (Kjerfve et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

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Ecological risk evaluation of sediment metals in a tropical Euthrophic Bay, Guanabara Bay, Southeast Atlantic

Abreu

Cordeiro

Soares-Gomes

et al. 2016

Marine Pollution Bulletin

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Surface sediments were collected from Guanabara Bay, at 14 stations distributed in five sectors, over three sampling campaigns. Analyses of metals, grain size fractions and total organic carbon analyses were performed. The geo-accumulation index and the enrichment factor were estimated to assess contamination status based on background values. Additionally, the sediment quality guidelines were applied to evaluate the adverse biological effects. Results show that there was no seasonal variation in sediment quality based on any methodology, and all methods utilized showed that NW sector and HRJ sector were the worst affected and that the NE sector had the best conditions. The sediments of GB are polluted mainly by Cr, Pb and Zn. According to ΣSEM/AVS, these metals are not available to the biota, although toxicity tests dispute this. Among the various methods employed, those using background values for the area seem to best reflect the local historical contamination.

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Section: Sampling Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ecological risk evaluation of sediment metals in a tropical Euthrophic Bay, Guanabara Bay, Southeast Atlantic

Abreu

Cordeiro

Soares-Gomes

et al. 2016

Marine Pollution Bulletin

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“…The Egyptian Mediterranean coast seems to be the most seriously polluted region as a result of accumulation of several metals which is contributed by both the point sources like industry and non-point sources like sewage, irrigation and urban runoff (El-Sorogy et al, 2016). (Osher et al, 2006;Nieto et al, 2007;Moreno et al, 2011;Popadic et al, 2013;Brady et al, 2014) 167.50 Guanabara Bay in Brazil (Alaoui et al, 2010) Zn Acid mine, mine, coke, ore, paints manufacturing, steel industry, industrial/domestic sewage, antifouling paints, oil spill (Osher et al, 2006;Nieto et al, 2007;Moreno et al, 2011;Popadic et al, 2013;Brady et al, 2014) 1005.00 Moulay Bousselham in Morocco (Borges et al, 2014) Pb Metal refineries/production, coal burning, metal refineries/ production, cement production, shipbuilding companies, natural weathering, oil spill (Moreno et al, 2011;Popadic et al, 2013;Chae et al, 2014) 384.68 Egyptian Mediterranean coast (El-Sorogy et al, 2016) Cd Acid mine, mine, coke, ore, lithogenic, phosphate fertilizers (Osher et al, 2006;Nieto et al, 2007;Dou et al, 2013;Brady et al, 2014) 28.88 Egyptian Mediterranean coast (El-Sorogy et al, 2016) Cr Paints manufacturing, oil combustion, geogenic source, shipping (combustion of oils), antifouling agents, oil spill (Osher et al, 2006;Moreno et al, 2011;Popadic et al, 2013;Brady et al, 2014;Keshavarzi et al, 2015) 347.00 Dhamara Estuary in India (Satapathy and Panda, 2015) Ni Oil combustion, geogenic source (Brady et al, 2014;Keshavarzi et al, 2015) 48...…”

Section: Global Distribution Of Metal Contamination In Coastal Sedimentsmentioning

confidence: 99%

Major threats of pollution and climate change to global coastal ecosystems and enhanced management for sustainability

Lü¹,

Yuan²

2018

Preprint

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Coastal zone is of great importance in the provision of various valuable ecosystem services. However, it is also sensitive and vulnerable to environmental changes due to high human populations and interactions between the land and ocean. Major threats of pollution from over enrichment of nutrients, increasing metals and persistent organic pollutants (POPs), and climate change have led to severe ecological degradation in the coastal zone, while few studies have focused on the combined impacts of pollution and climate change on the coastal ecosystems at the global level. A global overview of nutrients, metals, POPs, and major environmental changes due to climate change and their impacts on coastal ecosystems was carried out in this study. Coasts of the Eastern Atlantic and Western Pacific were hotspots of concentrations of several pollutants, and mostly affected by warming climate. These hotspots shared the same features of large populations, heavy industry and (semi-) closed sea. Estimation of coastal ocean capital, integrated management of land-ocean interaction in the coastal zone, enhancement of integrated global observation system, and coastal ecosystembased management can play effective roles in promoting sustainable management of coastal marine ecosystems. Enhanced management from the perspective of mitigating pollution and climate change was proposed.

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“…Heavy metals have adverse effects both to human beings and animals which include: osteoporosis; liver diseases; kidney diseases; harmful on lungs and immune system [1]. A number of researches have been done on sewage effluents which have revealed an increasing concentration in water sources [2].…”

Section: Introductionmentioning

confidence: 99%

EDXRF Spectroscopic Elemental Analysis for Efficacy of Kibabii University Sewage Treatment System

Situma¹,

Odhiambo²,

Makokha³

2018

OALib

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Elemental analysis of sewage effluents in Kibabii sewage treatment system was achieved via Energy-Dispersive X-Ray Fluorescence (EDXRF) spectroscopy with the aim of assessing the efficacy of the treatment system. Concentrations of lead (Pb), mercury (Hg), cadmium (Cd) and arsenic (As) were measured based on clay soil "standards" in concentration range for Pb, Hg and As as 12.7 ppm, 14.3 ppm and 8.83 ppm respectively for certification. Among other probable reference materials, clay soil "standards" were used for certification in this work because of similarity in matrix composition with the sediments. The concentration for Hg, Pb, and As in the sewage sediments were 10.65 ± 2.28 ppm, 8.86 ± 2.92 ppm and 3.41 ± 2.18 ppm respectively in lagoon A. In lagoon B the levels were 3.82 ± 0.56 ppm, 6.35 ± 1.50 ppm and 1.67 ± 0.53 ppm respectively. Lagoon C showed a reduction in the levels with 3.74 ± 1.39 ppm for Hg and 2.30 ± 0.27 ppm for Pb. As was not detected in lagoon C, on the other hand, Cd was not detected in all the lagoons. The efficacies in the treatment varied from 30.34%-51.78%, 37.63%-65.41% and 76.63%-84.81% for lagoon A, B and C respectively. The study was successful in quantifying the heavy elements in the lagoons from which the efficacy in the treatment process was determined. The study provided awareness on the elemental concentration levels in the Kibabii University sewage treatment system, hence creating awareness on what is released into River Kibabii. With this information, the surrounding community and the University can partner in order to mitigate the effects of heavy metals in the effluents in future due to the growth of the University day by day.

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Use of GIS for the evaluation of heavy metal contamination in the Cunha Canal watershed and west of the Guanabara Bay, Rio de Janeiro, RJ

Cited by 30 publications

References 13 publications

Ecological risk evaluation of sediment metals in a tropical Euthrophic Bay, Guanabara Bay, Southeast Atlantic

Ecological risk evaluation of sediment metals in a tropical Euthrophic Bay, Guanabara Bay, Southeast Atlantic

Major threats of pollution and climate change to global coastal ecosystems and enhanced management for sustainability

EDXRF Spectroscopic Elemental Analysis for Efficacy of Kibabii University Sewage Treatment System

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