Dechlorination of the chloroacetanilide herbicides alachlor and metolachlor by iron metal

GR Eykholt, DT Davenport

Index: Eykholt, Gerald R.; Davenport, Douglas T. Environmental Science and Technology, 1998 , vol. 32, # 10 p. 1482 - 1487

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Citation Number: 116

Abstract

Granular iron metal has been found to cause the reductive dechlorination of two important chloroacetanilide herbicides, alachlor and metolachlor. Aqueous solutions (113 mL) of the herbicides were contacted with 40 g of granular cast iron (CCI coarse, 40 mesh) with mild agitation at room temperature. First-order degradation rate constants were 0.12 and 0.10 h-1 for 10 mg/L solutions of alachlor and metolachlor, respectively. A two-site, rate-limited ...