Pollution of the Begej Canal sediment-metals, radioactivity and toxicity assessment

Dalmacija, Božo; Prica, Miljana; Ivančev-Tumbas, Ivana; Kooij, A. van der; Rončević, Srđan; Krčmar, Dejan; Bikit, I.; Teodorović, Ivana

doi:10.1016/j.envint.2006.01.006

Cited by 34 publications

(19 citation statements)

References 22 publications

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“…Os valores da perda ao fogo (PF a 550 o C), indicativos relativos das concentrações de matéria orgânica, 18,19,34,35 são mostrados na Tabela 1. Os resultados apresentaram variações significativas nas concentrações (1,14 a 13,41%), fortemente controladas pela granulometria.…”

Section: Granulometria Dos Sedimentos E Conteúdo De Matéria Orgânicaunclassified

O papel dos sulfetos volatilizados por acidificação no controle do potencial de biodisponibilidade de metais em sedimentos contaminados de um estuário tropical, no sudeste do Brasil

Nizoli¹,

Luiz-Silva²

2009

Quím. Nova

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and simultaneously extracted metals (SEM) were combined in order to verify the ecological hazard of contaminated sediments from the Santos-Cubatão Estuarine System (SE Brazil), which is located in one of the most industrialized areas in the Latin America. Intertidal sediments from the Morrão River estuary were collected seasonally in short cores. The redox conditions, organic matter contents and grain-size were the main controlling factors on SEM distribution. However, clear relationships among these variables and AVS were not observed. The molar SEM/AVS ratios were frequently > 1 especially in the summer, suggesting major metal bioavailability hazard in this humid hot season.

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Section: Granulometria Dos Sedimentos E Conteúdo De Matéria Orgânicaunclassified

O papel dos sulfetos volatilizados por acidificação no controle do potencial de biodisponibilidade de metais em sedimentos contaminados de um estuário tropical, no sudeste do Brasil

Nizoli¹,

Luiz-Silva²

2009

Quím. Nova

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“…Heavy metals, commonly present in poorly treated waste waters, contaminated surface waters and sediments, are easily identified as major toxicants in toxicity evaluation [22][23][24][25][26] using Daphnia magna acute tests, as this species is among the most sensitive standard test species to heavy metals (ECOTOX database.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of bacterial vs. acute Daphnia magna toxicity tests to metals

et al. 2009

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The objectives of this study were to evaluate the sensitivity of two bacterial tests commonly used in metal toxicity screening — the Vibrio fischeri bioluminescence inhibition test and the Pseudomonas putida growth inhibition test — in comparison to the standard acute Daphnia magna test, and to estimate applicability of the selected methods to the toxicity testing of environmental samples. The D. magna acute test proved to be more sensitive to cadmium (Cd), zinc (Zn) and manganese (Mn) than the two bacterial assays, whereas P. putida seems to be the most sensitive species to lead (Pb). Manganese appears to be slightly toxic to D. magna and non-toxic to the two selected bacteria. This leads to the conclusion that even in regions with high background concentrations, manganese would not act as a confounding factor. Low sensitivity of V. fischeri to heavy metals questions its applicability as the first screening method in assessing various environmental samples. Therefore, it is not advisable to replace D. magna with bacterial species for metal screening tests. P. putida, V. fischeri and/or other bacterial tests should rather be applied in a complex battery of ecotoxicological tests, as their tolerance to heavy metals can unravel other potentially present toxic substances and mixtures, undetectable by metal-sensitive species.

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“…They cannot be self-purified by the water body. As a result, heavy metals always accumulate in the bottom sediment of rivers and enter the food chain (Graney and Eriksen 2004;Dalmacija et al 2006;Geoffrey et al 2008). The occurrence of heavy metals in the environment results primarily from anthropogenic activities, though the natural processes that may enrich waters with trace elements also play a noticeable role (Zoumins et al 2001;Janel et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Effects of anthropogenic activities on chemical contamination within the Grand Canal, China

Wang¹,

Han²,

Xu³

et al. 2010

Environ Monit Assess

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Contamination of nutrients and heavy metals within aquatic system is of great concern due to its potential impact on human and animal health. The Grand Canal of China, the largest artificial river in the world, is of great importance in supplying water resource, transporting cargo, and recreating resident, as well as great historical heritage. This study assessed and examined the impact of human activities on characters of contamination distribution within the section of the Canal in Taihu watershed. Physicochemical parameters of surface water quality were determined monthly from the year 2004 to 2006 at

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Pollution of the Begej Canal sediment-metals, radioactivity and toxicity assessment

Cited by 34 publications

References 22 publications

O papel dos sulfetos volatilizados por acidificação no controle do potencial de biodisponibilidade de metais em sedimentos contaminados de um estuário tropical, no sudeste do Brasil

O papel dos sulfetos volatilizados por acidificação no controle do potencial de biodisponibilidade de metais em sedimentos contaminados de um estuário tropical, no sudeste do Brasil

Sensitivity of bacterial vs. acute Daphnia magna toxicity tests to metals

Effects of anthropogenic activities on chemical contamination within the Grand Canal, China

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