...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Bioanalytical Assessment of the Formation of Disinfection Byproducts in a Drinking Water Treatment Plant
【24h】

Bioanalytical Assessment of the Formation of Disinfection Byproducts in a Drinking Water Treatment Plant

机译：饮用水处理厂中消毒副产物形成的生物分析评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Disinfection of drinking water is the most successful measure to reduce water-borne diseases and protect health. However, disinfection byproducts (DBPs) formed from the reaction of disinfectants such as chlorine and monochloramine with organic matter may cause bladder cancer and other adverse health effects. In this study the formation of DBPs through a full-scale water treatment plant serving a metropolitan area in Australia was assessed using in vitro bioanalytical tools, as well as through quantification of halogen-specific adsorbable organic halogens (AOXs), characterization of organic matter, and analytical quantification of selected regulated and emerging DBPs. The water treatment train consisted of coagulation, sand filtration, chJorination, addition of lime and fluoride, storage, and chloramination. Nonspecific toxicity peaked midway through the treatment train after the chlorination and storage steps. The dissolved organic matter concentration decreased after the coagulation step and then essentially remained constant during the treatment train. Concentrations of AOXs increased upon initial chlorination and continued to increase through the plant, probably due to increased chlorine contact time. Most of the quantified DBPs followed a trend similar to that of AOXs, with maximum concentrations observed in the final treated water after chloramination. The mostly chlorinated and brominated DBPs formed during treatment also caused reactive toxicity to increase after chlorination. Both genotoxicity with and without metabolic activation and the induction of the oxidative stress response pathway showed the same pattern as the nonspecific toxicity, with a maximum activity midway through the treatment train. Although measured effects cannot be directly translated to adverse health outcomes, this study demonstrates the applicability of bioanaiytical tools to investigate DBP formation in a drinking water treatment plant, despite bioassays and sample preparation not yet being optimized for volatile DBPs. As such, the bioassays are useful as monitoring tools as they provide sensitive responses even at low DBP levels.
机译：饮用水消毒是减少水传播疾病和保护健康的最成功措施。但是，由消毒剂（例如氯和一氯胺）与有机物反应形成的消毒副产物（DBP）可能会引起膀胱癌和其他不良健康影响。在这项研究中，通过使用体外生物分析工具以及对卤素特异性可吸附有机卤素（AOX）进行定量，对有机物进行表征，评估了通过服务于澳大利亚都会区的大型水处理厂形成的DBP的情况，以及对选定的监管和新兴DBP的分析量化。水处理流程包括凝结，砂滤，氯化，添加石灰和氟化物，储存和氯化。在氯化和储存步骤后，非特异性毒性在整个处理过程中达到高峰。在凝结步骤之后，溶解的有机物浓度降低，然后在处理过程中基本上保持恒定。初始氯化后，AOX的浓度增加，整个工厂中AOX的浓度持续增加，这可能是由于氯接触时间增加所致。大多数量化的DBP遵循与AOX相似的趋势，在氯化后最终处理的水中观察到最大浓度。在治疗过程中形成的大部分氯化和溴化DBP也会引起反应毒性，氯化后增加。具有和不具有代谢活化的遗传毒性和氧化应激反应途径的诱导均表现出与非特异性毒性相同的模式，在治疗过程中途具有最大活性。尽管所测量的效果不能直接转化为不良的健康结果，但本研究表明，尽管尚未针对挥发性DBP进行生物测定和样品制备的优化，但生物分析工具仍可用于研究饮用水处理厂中DBP的形成。因此，生物测定可用作监测工具，因为即使在低DBP水平下，它们也能提供敏感的响应。

著录项

  • 来源
    《Environmental Science & Technology》 |2012年第18期|p.10317-10325|共9页
  • 作者

    Peta A. Neale; Alice Antony; Michael E. Bartkow; Maria Jose Farre; Anna Heitz; Ina Kristiana; Janet Y. M. Tang; Beate I. Escher;

  • 作者单位

    The University of Queensland, National Research Centre for Environ men taJ Toxicology (Entox), Brisbane, Queensland 4108,Australia;

    UNESCO Centre for Membrane Science and Technology, The University of New South Wales, Sydney, New South WaJes 2033,Australia;

    Queensland Bulk Water Supply Authority (Seqwater), Brisbane, Queensland 4000, Australia The University of Queensland, National Research Centre for Environ men taJ Toxicology (Entox), Brisbane, Queensland 4108,Australia;

    The University of Queensland, Advanced Water Management Centre (AWMC), Brisbane, Queensland 4072, Australia;

    Curtin Water Quality Research Centre (CWQRC), Curtin University, Perth, Western Australia 6102, Australia;

    Curtin Water Quality Research Centre (CWQRC), Curtin University, Perth, Western Australia 6102, Australia;

    The University of Queensland, National Research Centre for Environ men taJ Toxicology (Entox), Brisbane, Queensland 4108,Australia;

    The University of Queensland, National Research Centre for Environ men taJ Toxicology (Entox), Brisbane, Queensland 4108,Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号