Biodegradation of acetanilide herbicides acetochlor and butachlor in soil
  • 【DOI】

    10.3321/j.issn:1001-0742.2002.04.014

  • 【摘要】

    The biodegradation of two acetanilide herbicides,acetochlor and butachlor in soil after other environmental organicmatters addition were measured during 35 days laboratoryincubations. The herbicides w... 展开>>The biodegradation of two acetanilide herbicides,acetochlor and butachlor in soil after other environmental organicmatters addition were measured during 35 days laboratoryincubations. The herbicides were applied to soil alone, soil-SDBS(sodium dodecylbenzene sulfonate) mixtures and soil-HA (humic acid)mixtures. Herbicide biodegradation kinetics were compared in thedifferent treatment. Biodegradation products of herbicides in soilalone samples were identified by GC/MS at the end of incubation.Addition of SDBS and HA to soil decreased acetochlorbiodegradation, but increased butachlor biodegradation. Thebiodegradation half-life of acetochlor and butachlor in soil alone,soil-SDBS mixtures and soil-HA mixtures were 4.6d, 6.1d, 5.4d, and5.3d, 4.9d, and 5.3d respectively. The biodegradation products werehydroxyacetochlor and 2-methyl-6-ethylaniline for acetochlor, andhydroxybutachlor and 2,6-diethylaniline for butachlor. 收起<<

  • 【作者】

  • 【作者单位】

    Research Center for Eco-Environmental Sciences

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2002年4期

  • 【关键词】

    acetochlor  butachlor  soil  biodegradation kinetics  degradation products 

  • 【基金项目】

    国家自然科学基金