B. Cardozo, L. T. Espaniol, D. C. R. Silva, F. C. Manosso, E. M. V. Gomes, E. Düsman, T. G. Rauen
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引用次数: 0
Abstract
The consumption of freshwater from wells and springs is common on small properties in southern Brazil and often takes place in areas used for crop cultivation. In this context, this study aimed to investigate the ecotoxicity of water resources and adjacent soils in three agricultural regions in southern Brazil (Paraná-PR, Santa Catarina-SC, and Rio Grande do Sul-RS). Water and soil samples were collected four times over the course of 1 year. Ecotoxicological monitoring was conducted using cytotoxicity and mutagenicity tests on Allium cepa and the bioluminescent bacterium Vibrio fischeri (Microtox System). The A. cepa tests showed that soils adjacent to water resources in PR (winter) and SC (summer) exhibited cytotoxicity, which in the case of PR was associated with high iron concentrations in the soil. Water samples did not show cytotoxic or mutagenic effects in any of the A. cepa assays. In the V. fischeri tests, the highest toxicity was observed in the water sample from PR (spring), with an effective concentration (EC50) value of 15.51%. Multivariate analysis revealed changes in the quality of the water sources. This type of study is important for assessing the environmental quality of natural water resources under the influence of anthropogenic activities, enabling the evaluation and implementation of measures to protect freshwater quality.
从井和泉水中消耗淡水在巴西南部的小地产中很常见,通常发生在用于作物种植的地区。在此背景下,本研究旨在调查巴西南部三个农业区(Paraná-PR, Santa Catarina-SC和里约热内卢Grande do Sul-RS)的水资源和邻近土壤的生态毒性。在一年的时间里采集了四次水和土壤样本。采用细胞毒性和致突变性试验对韭菜和生物发光菌费氏弧菌(Microtox System)进行了生态毒理学监测。A. cepa试验表明,PR(冬季)和SC(夏季)水资源附近的土壤表现出细胞毒性,PR的细胞毒性与土壤中铁浓度高有关。水样没有显示细胞毒性或诱变作用在任何一种A. cepa测定。在试验中,以PR(泉)水样毒性最高,有效浓度(EC50)值为15.51%。多变量分析揭示了水源质量的变化。这种类型的研究对于评估受人为活动影响的自然水资源的环境质量,从而能够评价和实施保护淡水质量的措施具有重要意义。
期刊介绍:
International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management.
A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made.
The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.