在工程UV和UV-H2处理系统中的三胺农药的光化学命运:反应动力学,转化产物和残留毒性
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在PubMed上查看摘要
概括
此摘要是机器生成的。使用紫外线光和紫外线过氧化研究了三酸 (TPTH) 的光降解. 这两种方法都产生了有毒的副产品,
科学领域
- 环境化学
- 摄影化学
- 生态毒理学
背景情况
- 三酸 (TPTH) 是一种已知会导致内分泌干扰和生殖问题的有机杀菌剂.
- 要有效地从水中去除TPTH,需要了解其降解途径及其副产品的毒性.
研究的目的
- 在UV-254和UV-H2O2处理下确定TPTH的光降解动力学.
- 为了识别TPTH光变产品.
- 评估TPTH及其降解产物的残留毒性.
主要方法
- 在254nm直接光解以确定量子产量.
- 在UV-H2O2过程中评估基反应.
- 考虑pH值,离子强度和光敏剂的动力学研究.
- 用于毒性评估的细菌生长抑制试验.
主要成果
- 直接光解的TPTH量子产量为0.18±0.02molEin-1.
- 由于基反应,UV-H2O2增强了降解 (k = (7.81 ± 0.37) ×10^8 M-1 s-1).
- 主要光转化涉及基化,两种处理都产生了有毒产物.
结论
- 像UV-H2O2这样的先进氧化过程可以降解TPTH,但产生有毒的光产物.
- 环境条件如pH值和离子强度对降解率的影响最小.
- 精心考虑光产品的毒性对于有效的有机蛋白水处理至关重要.
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