农药学学报Issue(4)：472-476,5.DOI:10.3969/j.issn.1008-7303.2014.04.17
室内条件下土壤含水量对烟嘧磺隆消解的影响
Effect of water content in soil on the dissipation of nicosulfuron in the indoor condition
摘要
Abstract
The dynamics of dissipation and half-life of nicosulfuron with different water content in soil, and the effect of water content in soil on the dissipation of nicosulfuron was studied. Soil samples were extracted with V ( acetonitrile )∶V ( phosphate buffer solution ) =1∶4 , and the residue of nicosulfuron was determined by high performance liquid chromatography with UV detector ( HPLC-UV ) . Linear correlation of nicosulfuron was 0�999 9 with concentration between 0�25 -4 mg/L. The results of fortified experiment showed that the recovery was 91% -106%, with relative standard deviation (RSD) between 5�4% -9�5% on the fortified level of 0�05, 0�25 and 1�25 mg/kg. The limit of detection (LOD) for nicosulfuron was 0�012 mg/kg, and the limit of quantification (LOQ) of the method was 0�04 mg/kg. Water content in soil has only a little effect on the half-life of nicosulfuron when water content was below 50%. The half-life increased first and decreased later when water content was over 50%. The dissipation rate of nicosulfuron was the highest with 60% and 90% water content in soil, the half-life was 19�7 and 18�6 d, respectively.关键词
土壤/含水量/烟嘧磺隆/高效液相色谱/消解/半衰期Key words
soil/water content/nicosulfuron/HPLC/dissipation/half-life分类
化学化工引用本文复制引用
张佳,陈小员,潘强,田宏哲,高增贵,李兴海..室内条件下土壤含水量对烟嘧磺隆消解的影响[J].农药学学报,2014,(4):472-476,5.基金项目
公益性行业（农业）科研专项经费资助（201203098）；辽宁省高等学校优秀人才支持计划（LJQ2012059）． （）
