Degradation Mechanism of Ozonation of Endocrine Disruptor(Alachlor) in Drinkingwater
饮用水中内分泌干扰物甲草胺的O3氧化降解机制研究

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.