title: Dissipation and residue of S-metolachlor in maize and soil.
abstract: The purpose of this article was to establish a simple residue analysis method for S-metolachlor in maize and to study its dissipation and residue in maize field eco-system. The results showed that S-metolachlor declined rapidly in maize seedling and soil after application. The half-lives of S-metolachlor in maize seedlings in Beijing and Changchun were 6.68 and 4.85 days, respectively, and in soil were 12.81 and 14.81 days, respectively. The terminal residues of S-metolachlor in soil samples were very low (around 0.005-0.045 mg/kg), and the residues in maize seeds were not detectable. The use of S-metolachlor according to the recommended dosages in maize could be considered safe.
authors.affiliation: Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, China.
authors.forename: Pengying
authors.initials: P
authors.lastname: Cao
authors.forename: Xiangyun
authors.initials: X
authors.lastname: Wang
authors.forename: Fengmao
authors.initials: F
authors.lastname: Liu
authors.forename: Ercheng
authors.initials: E
authors.lastname: Zhao
authors.forename: Lijun
authors.initials: L
authors.lastname: Han
mesh_terms: D000081:Acetamides / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring / Q000379:methods; D005506:Food Contamination / Q000032:analysis*; D006540:Herbicides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D003313:Zea mays / Q000737:chemistry*
chemical_list: D000081:Acetamides; D006540:Herbicides; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; C051786:metolachlor