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首页> 外文期刊>Journal of Hazardous Materials >Decomposition of Iodinated Pharmaceuticals by UV-254 nm-assisted Advanced Oxidation Processes
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Decomposition of Iodinated Pharmaceuticals by UV-254 nm-assisted Advanced Oxidation Processes

机译：UV-254 nm辅助高级氧化工艺对含碘药物的分解

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摘要

Iodinated pharmaceuticals, thyroxine (a thyroid hormone) and diatrizoate (an iodinated X-ray contrast medium), are among the most prescribed active pharmaceutical ingredients. Both of them have been reported to potentially disrupt thyroid homeostasis even at very low concentrations. In this study, UV 254 nm-based photolysis and photochemical processes, i.e., UV only, UV/H2O2, and UV/S2O82-, were evaluated for the destruction of these two pharmaceuticals. Approximately 40% of 0.5 mu M thyroxine or diatrizoate was degraded through direct photolysis at UV fluence of 160 mJ cm(-2), probably resulting from the photosensitive cleavage of C-I bonds. While the addition of H2O2 only accelerated the degradation efficiency to a low degree, the destruction rates of both chemicals were significantly enhanced in the UV/S2O82- system, suggesting the potential vulnerability of the iodinated chemicals toward UV/S2O82- treatment. Such efficient destruction also occurred in the presence of radical scavengers when biologically treated wastewater samples were used as reaction matrices. The effects of initial oxidant concentrations,solution pH, as well as the presence of natural organic matter (humic acid or fulvic acid) and alkalinity were also investigated in this study. These results provide insights for the removal of iodinated pharmaceuticals in water and/or wastewater using UV-based photochemical processes. (C) 2016 Elsevier B.V. All rights reserved.
机译：碘化药物，甲状腺素（一种甲状腺激素）和泛影酸盐（一种碘化X射线造影剂）是处方药中最常用的成分。据报道，即使浓度很低，两者都可能破坏甲状腺稳态。在这项研究中，评估了基于紫外线254 nm的光解和光化学过程，即仅紫外线，UV / H2O2和UV / S2O82-的销毁程度。通过在160 mJ cm（-2）的UV能量通量下直接光解，降解了约40％的0.5μM甲状腺素或泛影酸盐，这可能是由于C-1键的光敏裂解所致。虽然添加H2O2仅在较低的程度上加速了降解效率，但在UV / S2O82-系统中两种化学药品的破坏率都得到了显着提高，这表明加碘的化学药品对UV / S2O82-处理具有潜在的脆弱性。当将经过生物处理的废水样品用作反应基质时，在自由基清除剂的存在下也会发生这种有效破坏。在这项研究中，还研究了初始氧化剂浓度，溶液pH值，天然有机物（腐殖酸或黄腐酸）和碱度的影响。这些结果为使用基于紫外线的光化学方法去除水和/或废水中的碘化药物提供了见识。 （C）2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Journal of Hazardous Materials》 |2017年第ptaa期|489-499|共11页
  • 作者

    Duan Xiaodi; He Xuexiang; Wang Dong; Mezyk Stephen P.; Otto Shauna C.; Marfil-Vega Ruth; Mills Marc A.; Dionysiou Dionysios D.;

  • 作者单位

    Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA;

    Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA;

    Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA;

    Calif State Univ Long Beach, Dept Chem & Biochem, 1250 Bellflower Blvd, Long Beach, CA 90840 USA;

    Calif State Univ Long Beach, Dept Chem & Biochem, 1250 Bellflower Blvd, Long Beach, CA 90840 USA;

    Amer Water, Innovat & Environm Stewardship, Belleville, IL 62220 USA;

    US EPA, Off Res & Dev, Cincinnati, OH 45268 USA;

    Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA|Univ Cyprus, Dept Civil & Environm Engn, Sch Engn, POB 20537, CY-1678 Nicosia, Cyprus|Univ Cyprus, Nireas Int Water Res Ctr, Sch Engn, POB 20537, CY-1678 Nicosia, Cyprus;

  • 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

    Thyroxine; Diatrizoate; UV-254 nm photolysis; Hydrogen peroxide; Persulfate;

    机译：甲状腺素;重氮酸盐;UV-254 nm光解;过氧化氢;过硫酸盐;

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