Residue analysis and dissipation of monosulfuron in soil and wheat

编号 zgly0000350047

文献类型 期刊论文

文献题名 Residue analysis and dissipation of monosulfuron in soil and wheat

作者 FANZhi-jin  HUJi-ye  AIYing-wei  QIANChuan-fan  YUWei-qiang  LIZheng-ming 

作者单位 NationalKeyLaboratoryofElemento-OrganicChemistry  CollegeofScience  CollegeofLifeScience 

母体文献 Journal of Environmental Sciences;环境科学学报: 英文版 

年卷期 2004,16(5)

页码 717-721

年份 2004 

分类号 X131  X173 

关键词 HPLC-UV  环境保护  小麦  土壤  滤渣  环境污染 

文摘内容 HPLC-UV residue analytical method for monosulfuron [ N-[( 4'-methyl ) pyrimidin-2'-yl ]-2-nitrophenylsulfonyl urea] in soil and wheat was developed. Monosulfuron residues were recovered by solvent extraction, followed by liquid-liquid partition, and C18 cartrige clean-up. Excellent method recoveries ranging from 95%-104% for both fortified soil and wheat grain were obtained with coefficients of variation 1.5%-11.8%. The minimum detectable quantities in soil and wheat were both 4 ng, the limit of detection was 0.02 mg/kg. When monosulfuron was applied according to double dosage of maximum recommended use direction(120 g ai/hm^2 of 10% monosulfuron wettable powder sprayed for once during development of wheat ) in field studies conducted in Shandong Province and near Beijing, monosulfuron residues was not detected in soil and wheat samples collected 75 d after application. Laboratory soil degradation studies showed that monosulfuron degraded faster in acidic soil and strong alkaline soil than in neutral or weak alkaline soil. Half lives in Jiangxi soil, Shijiazhuang soil, Jiangsu soil and Heilongjiang soil were 41, 48, 87 and 84 d respectively. Monosulfuron residues dissipated rapidly in Shandong and Beijing field test sites with half-lives of less than 14 d。