Decomposition of alachlor by ozonation and its mechanism |
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Authors: | LI Hai-yan QU Jiu-hui and LIU Hui-juan |
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Institution: | 1. School of Environment of Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China 2. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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Abstract: | Decomposition and corresponding mechanism of alachlor, an endocrine disruptor, in water by ozonation was 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. |
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Keywords: | alachlor ozonation decomposition mechanism mechanism ozonation alachlor information dechlorination fastest step weak polarity inorganic ions carboxylic acids aromatic compounds intermediates final products during process Results ozone |
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