| 饮用水中内分泌干扰物甲草胺的O3氧化降解机制研究 |
| 摘要点击 1277 全文点击 1146 投稿时间：2003-05-14 修订日期：2003-06-05 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 甲草胺 O3氧化 内分泌干扰物质 降解机制 |
| 英文关键词 alachlor ozonation endocrine disruptor degradation mechanism |
|
| 中文摘要 |
| 研究了饮用水中一种具有内分泌干扰作用的有机污染物甲草胺的臭氧氧化降解机制.采用液相色谱、气相色谱、UV吸收及离子色谱对甲草胺臭氧氧化降解反应的中间产物和最终产物进行跟踪分析.结果表明,O3在酸性条件下单独作用时,反应进行30 min后就可去除甲草胺约94%,但TOC仅去除了约35%, 这说明O3氧化降解甲草胺的过程不能完全矿化为CO2和H2O.通过UV和液相色谱可观察到反应过程中大量中间产物的生成,其中有一定量的小分子有机酸产生,导致处理后水的pH从5.96下降到3.94,反应中无机离子的产生也证实了甲草胺的结构在一定程度上被破坏.
|
| 英文摘要 |
| In this study, the degradation mechanism of an endocrine disruptor,alachlor, by ozonation was investigated. HPLC,GC,IC and UV were used to follow the intermediate and ultimate oxidation products produced in the ozonation of alachlor. The results showed that 94% alachlor was degraded after being directly ozonated for 30 min at acidic condition. But alachlor could not be completely degraded to CO2 and H2O, which was 35 percentage of TOC removal after being ozonated for 180min. Several intermediate oxidation products were observed by UV and HPLC. Organic acids of small molecular were produced in the ozonation, resulting in the decreasing of pH from 5.96 to 3.94. The broken of alachlor structure was verified by the creation of inorganic ions in the ozonation. |
|
|
|
