Decomposition of alachlor by ozonation and its mechanism.
Decomposition and corresponding mechanism of alachlor, an endocrine disruptor in water by ozonation were investigated. Results showed that alachlor could not be completely mineralized by ozone alone. Many intermediates and final products were formed during the process, including aromatic compounds, aliphatic carboxylic acids, and inorganic ions. In evoluting these products, some of them with weak polarity were qualitatively identified by GC-MS. The information of inorganic ions suggested that the dechlorination was the first and the fastest step in the ozonation of alachlor.
Li
Hai-Yan
HY
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. lihaiyan@bucea.edu.cn
Qu
Jiu-Hui
JH
Liu
Hui-Juan
HJ
D000081:Acetamides / Q000737:chemistry*; D002244:Carbon / Q000032:analysis; D052244:Endocrine Disruptors / Q000737:chemistry; D006540:Herbicides / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
D000081:Acetamides; D052244:Endocrine Disruptors; D006540:Herbicides; D016877:Oxidants; D014874:Water Pollutants, Chemical; C000188:alachlor; D010126:Ozone; D002244:Carbon