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首页> 外文期刊>Ecotoxicology and Environmental Safety >Combination of physico-chemical analysis, Allium cepa test system and Oreochromis niloticus erythrocyte based comet assayuclear abnormalities tests for cyto-genotoxicity assessments of treated effluents discharged from textile industries
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Combination of physico-chemical analysis, Allium cepa test system and Oreochromis niloticus erythrocyte based comet assayuclear abnormalities tests for cyto-genotoxicity assessments of treated effluents discharged from textile industries

机译：结合理化分析，葱属洋葱试验系统和基于尼罗罗非鱼的红细胞彗星试验/核异常试验，对纺织工业排放的经处理废水进行细胞遗传毒性评估

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Bioassays for cyto-genotoxicity assessments are generally not required in current textile industry effluent discharge management regulations. The present study applied in vivo plant and fish based toxicity tests viz. Allium cepa test system and Oreochromis niloticus erythrocyte based comet assay and nuclear abnormalities tests in combination with physico-chemical analysis for assessing potential cytotoxicigenotoxic impacts of treated textile industry effluents reaching a major river (Kelani River) in Sri Lanka. Of the treated effluents tested from two textile industries, color in the Textile industry 1 effluents occasionally and color, biochemical oxygen demand and chemical oxygen demand in the Textile industry 2 effluents frequently exceeded the specified Sri Lankan tolerance limits for discharge of industrial effluents into inland surface waters. Exposure of A. cepa bulbs to 100% and 12.5% treated effluents from both industries resulted in statistically significant root growth retardation, mito-depression, and induction of chromosomal abnormalities in root meristematic cells in comparison to the dilution water in all cases demonstrating cyto-genotoxicity associated with the treated effluents. Exposure of O. niloticus to the 100% and 12.5% effluents, resulted in erythrocytic genetic damage as shown by elevated total comet scores and induction of nuclear abnormalities confirming the genotoxicity of the treated effluents even with 1:8 dilution. The results provide strong scientific evidence for the crucial necessity of incorporating cytogenotoxicity impact assessment tools in textile industry effluent management regulations considering human health and ecological health of the receiving water course under chronic exposure. (C) 2016 Elsevier Inc. All rights reserved.
机译：当前的纺织工业废水排放管理法规中通常不需要进行细胞遗传毒性评估的生物测定。本研究应用了基于植物和鱼类的体内毒性试验，即。葱属cepa测试系统和基于尼罗罗非鱼的红细胞彗星分析以及核异常测试与物理化学分析相结合，用于评估处理后的纺织工业废水进入斯里兰卡的一条主要河流（Kelani河）的潜在细胞毒物毒性影响。在两个纺织行业测试的经处理废水中，纺织行业1偶尔出现颜色，纺织行业2废水中的颜色，生化需氧量和化学需氧量经常超过斯里兰卡指定的工业废水向内陆表面排放的容许极限水域。在所有情况下，与稀释水相比，两种行业的100％和12.5％的处理过的污水中均暴露有洋葱曲霉鳞茎，导致统计学上显着的根系生长迟缓，线粒体抑制和根系间质细胞染色体异常的诱导。与处理后的废水有关的遗传毒性。尼罗罗非鱼暴露于100％和12.5％的废水中会导致红细胞遗传损害，如总彗星评分升高和核异常的诱导所证实的，即使使用1：8的稀释液也证实了所处理废水的遗传毒性。该结果为将细胞遗传毒性影响评估工具纳入纺织品工业废水管理法规中的关键必要性提供了强有力的科学证据，考虑到人类健康和长期暴露下的进水水道的生态健康。 （C）2016 Elsevier Inc.保留所有权利。

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