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《Chinese Journal of Environmental Engineering》 2007-01
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Reduction of 2-chloronitrobenzene by Fe~0 in soils

Chen Yifei Chen Shaojin(Research Institute of Environmental Chemistry and Technology,Hanshan Teachers College,Chaozhou 521041)  
The reduction of 2-chloronitrobenzene(o-CNB) in soils by Fe~0 at ambient temperature and pressure was studied.The effects of several parameters of the reaction system as well as the changes of the reaction products with time were investigated.Results from GC-MS analyses of the samples indicated that o-CNB was initially reduced by Fe~0 to 2-chloro-nitrosobenzene,and finally to 2-chloroaniline.The reaction time,the quantity of Fe~0,and the initial soil pH all had some impacts on the reduction of o-CNB by Fe~0.An acidic soil pH and a higher temperature seemed to promote more reduction of o-CNB.After 4 hours of reaction,the efficiency of the reduction reached 99% when 25 mg of Fe~0 per gram of soil was added and the initial concentration of o-CNB was 2.5×10~(-6)mol/g.In addition,preliminary mechanisms of the reduction reaction were discussed briefly.
【Fund】: 广东省自然科学基金资助项目(04106270)
【CateGory Index】: X132
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