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首页> 外文期刊>Journal of Hazardous Materials >Investigating the formation and toxicity of nitrogen transformation products of diclofenac and sulfamethoxazole in wastewater treatment plants
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Investigating the formation and toxicity of nitrogen transformation products of diclofenac and sulfamethoxazole in wastewater treatment plants

机译：调查双氯芬酸和磺胺甲恶唑在污水处理厂中氮转化产物的形成和毒性

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摘要

Diclofenac (DCF) and sulfamethoxazole (SMX) are highly consumed pharmaceuticals and concentrated in effluents from conventional wastewater treatment plants (WWTPs) since they are not completely eliminated. Under microbial mediated nitrification/denitrification processes occurring in nitrifying activated sludge DCF biotransformed into its nitroso and nitro derivatives (NO-DCF and NO2-DCF, respectively). SMX was biotransformed under denitrification conditions in water/sediment batch reactors into its nitro and desamino derivatives (NO2-SMX and Des-SMX, respectively). Four transformation products (TPs) from DCF and SMX were analized in wastewaters (WW) and receiving surface waters (SW). Nitrifying/denitrifying-derivatives of DCF and SMX were detected for the first time in WW and SW at one order of magnitude lower than their parent compounds. Relationships observed among levels of NO-DCF, NO2-DCF and nitrogen-species tentatively suggested that nitrification/denitrification processes are involved in nitration and nitrosation of DCF during biological WW treatment. Acute toxicity of analytes to Daphnia magna and Vibrio fischeri was assessed individually and in mixtures with other relevant micropollutants. Individual effects showed these compounds as not harmful and not toxic. However, synergism effects observed in mixtures evidenced that contribution of these compounds to overall toxicity of complex environmental samples, should not be dismissed. (C) 2016 Elsevier B.V. All rights reserved.
机译：双氯芬酸（DCF）和磺胺甲恶唑（SMX）是消耗量很大的药物，由于未完全消除，因此它们集中在常规废水处理厂（WWTP）的废水中。在微生物介导的硝化/反硝化过程中，发生在硝化活性污泥中的DCF生物转化为其亚硝基和硝基衍生物（分别为NO-DCF和NO2-DCF）。 SMX在水/沉淀分批反应器中的反硝化条件下生物转化为其硝基和脱氨基衍生物（分别为NO2-SMX和Des-SMX）。 DCF和SMX的四种转化产品（TP）在废水（WW）和接收地表水（SW）中进行了分析。在WW和SW中首次检测到DCF和SMX的硝化/反硝化衍生物，其含量比其母体化合物低一个数量级。暂时观察到NO-DCF，NO2-DCF和氮物种之间的关系表明，硝化/反硝化过程参与了生物WW处​​理过程中DCF的硝化和亚硝化。分别评估了分析物对大型蚤（Daphnia magna）和费氏弧菌（Vibrio fischeri）的急性毒性，并与其他相关的微量污染物混合使用。个别效果显示这些化合物无害无毒。但是，在混合物中观察到的协同效应证明，不应忽略这些化合物对复杂环境样品总体毒性的影响。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Journal of Hazardous Materials》 |2016年第15期|157-164|共8页
  • 作者

    Osorio Victoria; Sanchis Josep; Luis Abad Jose; Ginebreda Antoni; Farre Marinella; Perez Sandra; Barcelo Damia;

  • 作者单位

    IDAEA CSIC, Water & Soil Qual Res Grp, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Spain;

    IDAEA CSIC, Water & Soil Qual Res Grp, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Spain;

    RUBAM IIQAC CSIC, Jordi Girona 18-26, Barcelona, Spain;

    IDAEA CSIC, Water & Soil Qual Res Grp, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Spain;

    IDAEA CSIC, Water & Soil Qual Res Grp, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Spain;

    IDAEA CSIC, Water & Soil Qual Res Grp, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Spain;

    IDAEA CSIC, Water & Soil Qual Res Grp, Dept Environm Chem, Jordi Girona 18-26, Barcelona 08034, Spain|Univ Girona, Catalan Inst Water Res ICRA, Sci & Technol Pk,Ernili Grahit 101, Girona, Spain;

  • 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

    Pharmaceuticals; Nitrification/denitrification; Vibrio fischeri; Daphnia magma; Toxicity;

    机译：制药;硝化/反硝化;费氏弧菌;水蚤;岩浆;毒性;

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