...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Photochemical Degradation of Benzotriazole
【24h】

Photochemical Degradation of Benzotriazole

机译：苯并三唑的光化学降解

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

Benzotriazole is a commonly used additive in aircraft de-icing fluids. As a result of extensive de-icing activities the compound is detected in the groundwater below de-icing platforms at several international airports. The compound is toxic, and not biodegradable. Laboratory tests have been performed to study if UV irradiation can degrade the compound and reduce the aquatic toxicity. Benzotriazole can be degraded by UV irradiation at pH values below 7. Approximately 65% reduction in the benzotriazole concentration was achieved at a dose of 320 mWs/cm~2, and almost 90% reduction was achieved at 1070 mWs/cm~2, with an apparent first order relation between the logarithm to the UV dose and the reduction. Benzotriazole is not significantly mineralised by UV irradiation, but transformed into other compounds, of which aniline and phenazine were identified. The metabolites show toxic effects, but they are not as toxic as benzotriazole, resulting in a general decrease in toxicity as a result of UV irradiation.
机译：苯并三唑是飞机除冰液中常用的添加剂。由于广泛的除冰活动，该化合物在几个国际机场的除冰平台下方的地下水中被检测到。该化合物有毒，且不可生物降解。已经进行了实验室测试以研究紫外线辐射是否可以降解该化合物并降低水生毒性。 pH值低于7时，可通过UV辐射降解苯并三唑。在320 mWs / cm〜2的剂量下，苯并三唑的浓度降低约65％，而在1070 mWs / cm〜2的剂量下，则降低近90％。 UV剂量的对数与减少之间的明显的一阶关系。苯并三唑不会被紫外线辐射显着矿化，但会转化为其他化合物，其中已鉴定出苯胺和吩嗪。代谢物显示出毒性作用，但毒性不如苯并三唑，由于紫外线照射导致毒性普遍降低。

著录项

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