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首页> 外文期刊>Environmental Science & Technology >Development of Fluorescence Surrogates to Predict the Photochemical Transformation of Pharmaceuticals in Wastewater Effluents
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Development of Fluorescence Surrogates to Predict the Photochemical Transformation of Pharmaceuticals in Wastewater Effluents

机译：开发用于预测废水中药物的光化学转化的荧光替代物

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摘要

The photochemical transformation of pharmaceutical and personal care products (PPCPs) in wastewater effluents is an emerging concern for environmental scientists. In the current study, the photodegradation of 29 PPCPs was examined in effluents under simulated solar irradiation. Direct photodegradation, triplet state effluent organic matter (~3EfOM~*)-mediated and hydroxyl radical (HO~•)-mediated degradation are three major pathways in the removal process. With the photodegradation of trace levels of PPCPs, the excitation-emission matrix (EEM) fluorescence intensities of the effluents were also gradually reduced. Therefore, fluorescence peaks have been identified, for the first time, as appropriate surrogates to assess the photodegradation of PPCPs. The humic-like fluorescence peak is linked to direct photolysis-labile PPCPs, such as naproxen, ronidazole, diclofenac, ornidazole, tinidazole, chloramphenicol, flumequine, ciprofloxacin, methadone, and dimetridazole. The tyrosine-like EEM peak is associated with HO~•C0_3~(•-)-labile PPCPs, such as trimethoprim, ibuprofen, gemfibrozil, atenolol, carbamazepine, and cephalexin. The tryptophan-like peak is associated with ~3EfOM~*-labile PPCPs, such as clenbuterol, metoprolol, venlafaxine, bisphenol A, propranolol, ractopamine, salbutamol, roxithromycin, clarithromycin, azithromycin, famotidine, terbutaline, and erythromycin. The reduction in EEM fluorescence correlates well with the removal of PPCPs, allowing a model to be constructed. The solar-driven removal of EEM fluorescence was applied to predict the attenuation of 11 PPCPs in five field samples. A close correlation between the predicted results and the experimental results suggests that fluorescence may be a suitable surrogate for monitoring the solar-driven photodegradation of PPCPs in effluents.
机译：废水中药物和个人护理产品（PPCP）的光化学转化是环境科学家日益关注的问题。在当前的研究中，在模拟太阳辐射下检查了废水中29种PPCP的光降解。直接光降解，三重态废水有机物（〜3EfOM〜*）介导和羟基自由基（HO〜•）介导的降解是去除过程中的三个主要途径。随着痕量级PPCP的光降解，废水的激发-发射矩阵（EEM）荧光强度也逐渐降低。因此，首次确定了荧光峰作为评估PPCPs光降解的适当替代物。腐殖质样的荧光峰与直接光分解不稳定的PPCPs相连，如萘普生，ronidazole，双氯芬酸，奥硝唑，替硝唑，氯霉素，氟美喹啉，环丙沙星，美沙酮和二甲达唑。类酪氨酸的EEM峰与不稳定的HO〜•C0_3〜（•-）PPCP有关，如甲氧苄啶，布洛芬，吉非贝齐，阿替洛尔，卡马西平和头孢氨苄。色氨酸样峰与〜3EfOM〜*不稳定的PPCP相关，例如盐酸克伦特罗，美托洛尔，文拉法辛，双酚A，普萘洛尔，雷克多巴胺，沙丁胺醇，罗红霉素，克拉霉素，阿奇霉素，法莫替丁，特布他林和红霉素。 EEM荧光的减少与PPCP的去除非常相关，从而可以构建模型。太阳驱动的EEM荧光去除被用于预测五个野外样品中11种PPCP的衰减。预测结果与实验结果之间的密切相关性表明，荧光可能是监测废水中PPCP的太阳驱动光降解的合适替代品。

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  • 来源
    《Environmental Science & Technology》 |2017年第5期|2738-2747|共10页
  • 作者

    Shuwen Yan; Bo Yao; Lushi Lian; Xinchen Lu; Shane A. Snyder; Rui Li; Weihua Song;

  • 作者单位

    Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, P. R. China;

    Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, P. R. China;

    Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, P. R. China;

    Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, P. R. China;

    Department of Chemical & Environmental Engineering, University of Arizona, Tucson, Arizona 85721, United States;

    Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, P. R. China;

    Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, P. R. China;

  • 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);
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