Mutagenicity assessment in a river basin influenced by agricultural, urban and industrial sources

Lemos, Andréia Torres de; Rosa, Danielle Pereira; Rocha, Jocelita Aparecida Vaz; Vargas, Vera Maria Ferrão

doi:10.1016/j.ecoenv.2009.08.006

Cited by 26 publications

(21 citation statements)

References 35 publications

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“…Sinos River water is contaminated with pollutants related to two major environmental impacts: domestic sewage and untreated urban discharges. These results are consistent with the study by Amaral (2006), Jacociunas (2010), Lemos (2009) and Pereira (2007 The water quality index (WQI) is expressed as a numerical value, in which water samples are assigned a score from zero (0) to one hundred (100) concerning water quality conditions in a river: excellent (90-100); good (70-90); average (50-70); poor (25-50); and very poor (0-25). Since this index provides a simple and systematic measurement, it has been widely used for monitoring water …”

Section: Sampling Sitessupporting

confidence: 83%

“…Other human activities, such as forest cutting and burning and the use of inappropriate management techniques and procedures, have led to soil erosion, and the uncontrolled expansion of cities and highway construction have also contributed to an increase in residue levels in rivers (Margalef, 1991). These residues may bring about changes in the composition of water, which could produce harmful effects on the organisms inhabiting these areas and also on the human body (Villela et al, 2007;Lemos, 2009). The disordered occupation of the Sinos River basin, with the use of aggressive technologies in the water and soil, has led to the increasing contamination of water resources and degradation of its unique flora and fauna (COMITESINOS, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Water quality assessment of the Sinos River, Southern Brazil

Blume

Macedo²,

Meneguzzi

et al. 2010

Braz. J. Biol.

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The Sinos River basin is located Northeast of the state of Rio Grande do Sul (29° 20' to 30° 10' S and 50° 15' to 51° 20' W), Southern Brazil, covering two geomorphologic provinces: the Southern plateau and central depression. It is part of the Guaíba basin and has an area of approximately 800 km 2 , encompassing 32 municipalities. The objective of this study was to monitor water quality in the Sinos River, the largest river in this basin. Water samples were collected at four selected sites in the Sinos River, and the following parameters were analysed: pH, dissolved oxygen, biochemical oxygen demand (BOD 5 ), turbidity, fecal coliforms, total dissolved solids, temperature, nitrate, nitrite, phosphorous, chromium, lead, aluminum, zinc, iron, and copper. The results were analysed based on Resolution No. 357/2005 of the Brazilian National Environmental Council (CONAMA) regarding regulatory limits for residues in water. A second analysis was performed based on a water quality index (WQI) used by the Sinos River Basin Management Committee (COMITESINOS). Poor water quality in the Sinos River presents a worrying scenario for the region, since this river is the main source of water supply for the urban core. Health conditions found in the Sinos River, mainly in its lower reaches, are worrying and a strong indicator of human activities on the basin.Keywords: Sinos River, water resources, water quality. Avaliação da qualidade da água do Rio dos Sinos ResumoA Bacia Hidrográfica do Rio dos Sinos localizada a nordeste do Estado do Rio Grande do Sul, entre as coordenadas geográficas de 29° 20' a 30°10' de latitude Sul e de 50° 15' a 51° 20' de longitude Oeste. As províncias geomorfológicas abrangidas são o planalto meridional e a depressão. Compondo a Região Hidrográfica do Guaíba, ocupa, aproximadamente, uma área de 800 km 2 , abrangendo 32 municípios. O objetivo deste trabalho foi monitorar a qualidade da água do rio dos Sinos, principal rio da bacia hidrográfica do rio dos Sinos. Foram realizadas coletas em quatro pontos selecionados do rio, sendo realizadas análises de pH, oxigênio dissolvido, demanda bioquímica de oxigênio (DBO 5 ), turbidez, coliformes fecais, sólidos dissolvidos totais, temperatura, nitrato, nitrito, fosfato, cromo, chumbo, alumínio, zinco, ferro e cobre. Os resultados do trabalho foram analisados com base na resolução CONAMA nº 357 de 2005 em relação a suas restrições de uso. Outra análise foi feita empregando o Índice de Qualidade das Águas (IQA), índice usado pelo comitê de gerenciamento desta bacia (COMITESINOS). A baixa qualidade da água do rio dos Sinos observada deslumbra um cenário preocupante para a região que usa este rio como a principal fonte de abastecimento público. As condições sanitárias encontradas no rio dos Sinos, principalmente no trecho inferior, são preocupantes sendo forte indicativo das atividades antrópicas na bacia.Palavras-chave: Rio dos Sinos, recursos hídricos, qualidade da água.

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Section: Sampling Sitessupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Water quality assessment of the Sinos River, Southern Brazil

Blume

Macedo²,

Meneguzzi

et al. 2010

Braz. J. Biol.

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“…Upper river basin shows a low pollution mainly from small farm. Other result showed high concentration mutagenic responses at Sinos river in the middle and lower reaches influenced by large discharge from domestic sewers and industries [42]. …”

Section: Applicationmentioning

confidence: 99%

“…Lemos et al [42] studied genotoxic potential of a river basin under impact of agricultural, urban and industrial activities influence of climatic variation. The Salmonella assay different strains were performed.…”

Section: Applicationmentioning

confidence: 99%

Biological procedures to detect carcinogenic compounds in domestic wastewater

Malakahmad¹,

Manan²,

Hilmin³

2014

WIT Transactions on Ecology and the Environment

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Cancer is a leading cause of death worldwide and can be increased further to more than 13.1 million people per year by 2030. Cancer occurs due to the continuous exposure of carcinogenic compounds under certain concentrations. A carcinogen is an agent that can cause mutation, leading to cancer. Therefore, mutations are indications of the presence of carcinogenic compounds. The mutation effects in biological organisms are various. They are chromosomal aberrations, growth inhibition and teratogenic effects. These effects can only be detected through the application of biological approaches. This review gives descriptions on the biological detection and measurement of carcinogens in wastewater and water estuaries. The biological procedures such as the chromosomal aberration (CA), Comet assay, Micronucleus (MN) assay SOS chromotest and organic extraction of XAD with blue rayon is discussed. These bioassays played an important role in the detection of carcinogens from waterborne contaminants in the environment such as pesticides, industrial pollution and heavy metals. The evaluations are based on advantages and disadvantages, accuracy, speed and time factor of methods and experimental procedures. As cancer is often linked to DNA damage, these assays are also time and cost effective to estimate the carcinogenic potential of a compound. Thus, the concept of carcinogenic compounds detection and measurement in wastewater is of great attention due to their toxic and non-biodegradable nature.

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“…Historicamente, a toxicologia tem se concentrado nos efeitos adversos dos xenobióticos sobre os seres humanos e animais domésticos, após exposição direta (FERNICOLA, 2004). Já a toxicologia aquática é o estudo dos efeitos de substâncias químicas naturais e substâncias e/ou atividades de origem antropogênicas, em organismos aquáticos nos seus diversos níveis de organização, desde estruturas celulares até indivíduos, populações, comunidades e ecossistemas RODRIGUES et al, 2007;KOVACS et al, 2002;PABLOS et al, 2009;SIMS;STEEVENS, 2008;SOTERO-SANTOS, 2005;WILKE, 2008 Ensaios do potencial genotóxico de amostras de água (CARDOZO et al, 2006;LEMOS et al, 2009;UMBUZEIRO et al, 2001;VARGAS et al, 2008;) e de sedimentos (HORN et al, 2004;LEMOS et al, 2009;TAGLIARIet al, 2004;VARGAS et al, 2001) têm sido bastante utilizados para avaliar o impacto das atividades agrícolas, urbanas e industriais, configurando-se apropriados para avaliação de risco ambiental, ao evidenciar os danos ao DNA e posteriores alterações em organismos aquáticos em nível molecular, celular e tecidual. (GERHARDT et al, 1994;GERHARDT, 1999).…”

Section: Toxicidade Aquáticaunclassified

Estudos limnológicos e ecotoxicológicos com amostras de água e sedimento do ribeirão Limeira - Piquete/Lorena-SP

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Mutagenicity assessment in a river basin influenced by agricultural, urban and industrial sources

Cited by 26 publications

References 35 publications

Water quality assessment of the Sinos River, Southern Brazil

Water quality assessment of the Sinos River, Southern Brazil

Biological procedures to detect carcinogenic compounds in domestic wastewater

Estudos limnológicos e ecotoxicológicos com amostras de água e sedimento do ribeirão Limeira - Piquete/Lorena-SP

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