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Genotoxicity of source, treated and distributed water from four drinking water treatment plants supplied by surface water in Sardinia, Italy.
Environmental Research ( IF 7.7 ) Pub Date : 2020-03-14 , DOI: 10.1016/j.envres.2020.109385
Donatella Feretti 1 , Mattia Acito 2 , Marco Dettori 3 , Elisabetta Ceretti 1 , Cristina Fatigoni 2 , Stefano Posadino 3 , Ilaria Zerbini 1 , Milena Villarini 2 , Massimo Moretti 2 , Paolo Castiglia 3 , Antonio Azara 3
Affiliation  

High levels of disinfection by-products (DBPs) are constantly found in drinking water distributed in Sardinia, an Italian island with a tourist vocation and critical issues related to the drinking water supply. To reduce the concentration of trihalomethanes the disinfectant in use was changed - chlorine dioxide was adopted instead of hypochlorite. However, this caused the appearance of other DBPs (e.g., chlorites) in water distributed to the population. Thus, the use of monochloramine as a secondary disinfectant (associated with chlorine dioxide as the primary disinfectant) was evaluated in four drinking water treatment plants supplied by artificial basins located in the central-northern part of Sardinia. Raw, disinfected and distributed waters were studied for genotoxicity using a battery of in vitro tests on different cells (bacteria, plant and mammalian cells) to detect different genetic endpoints (i.e., point and chromosome mutations and DNA damage). Moreover, a chemical and microbiological characterisation of water samples was performed. All samples of water distributed to the people showed mutagenic or genotoxic effects in different cells/organisms. In particular, chromosome aberrations in plant cells and DNA damage in human cells were observed. In this study, the use of chloramines associated with other disinfectants did not eliminate the mutagenicity present in the raw water and when the raw water was not mutagenic it introduced mutagenic/genotoxic substances. A careful management of drinking water is needed to reduce health hazards associated with the mutagenicity of drinking water.

中文翻译:

来自意大利撒丁岛的四个地表水供应的饮用水处理厂的水,原水和经处理水的遗传毒性。

在撒丁岛(撒丁岛)分布的饮用水中经常发现高水平的消毒副产物(DBP),撒丁岛是旅游业和与饮用水供应相关的关键问题的意大利岛屿。为了降低三卤甲烷的浓度,更换了使用的消毒剂-采用二氧化氯代替次氯酸盐。但是,这导致分配给人口的水中出现其他DBP(例如亚氯酸盐)。因此,在撒丁岛中北部地区由人工盆提供的四个饮用水处理厂中,对一氯胺作为次要消毒剂(与二氧化氯作为主要消毒剂)的使用进行了评估。使用一系列针对不同细胞(细菌,植物和哺乳动物细胞)以检测不同的遗传终点(即点和染色体突变以及DNA损伤)。此外,对水样品进行了化学和微生物表征。分发给人们的所有水样在不同的细胞/生物中均表现出诱变或遗传毒性作用。特别地,观察到植物细胞中的染色体畸变和人细胞中的DNA损伤。在这项研究中,与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。点和染色体突变以及DNA损伤)。此外,对水样品进行了化学和微生物表征。分配给人们的所有水样在不同的细胞/生物中均表现出诱变或遗传毒性作用。特别地,观察到植物细胞中的染色体畸变和人细胞中的DNA损伤。在这项研究中,与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。点和染色体突变以及DNA损伤)。此外,对水样品进行了化学和微生物表征。分发给人们的所有水样在不同的细胞/生物中均表现出诱变或遗传毒性作用。特别地,观察到植物细胞中的染色体畸变和人细胞中的DNA损伤。在这项研究中,与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。分发给人们的所有水样在不同的细胞/生物中均表现出诱变或遗传毒性作用。特别地,观察到植物细胞中的染色体畸变和人细胞中的DNA损伤。在这项研究中,与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。分发给人们的所有水样在不同的细胞/生物中均表现出诱变或遗传毒性作用。特别地,观察到植物细胞中的染色体畸变和人细胞中的DNA损伤。在这项研究中,与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。与其他消毒剂结合使用的氯胺并不能消除原水中的致突变性,当原水不致突变时,会引入致突变/遗传毒性物质。需要认真管理饮用水,以减少与饮用水的致突变性有关的健康危害。
更新日期:2020-03-16
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