摘要
应用气相色谱法测定油菜、油菜籽和土壤中的甲基立枯磷农药残留量。丙酮提取甲基立枯磷，液－液分配法去除提取液中的水分和水溶性杂质，酸洗活性碳去除叶绿素等杂质，得到纯净的甲基立枯磷提取液，供气相色谱测试。选用ＯＶ－１固定相及ＦＰＤ检测器分离和测定甲基立枯磷残留量。添加回收率为９０．５％～１０６．０％，变异系数１．１０％～５．８３％；最小检测量７．０×１０－１４ｇ；最小检测浓度（３×１０－５）～（２×１０－４）ｍｇ／ｋｇ。
A GC method for determining pesticide residues of tolclofosmethyl in rape,rapeseed and soil was reported.tolclofosmethyl was extracted with aceton.The water and watersoluable impurities in extract were removed by liquidliquid partitioning method,and chlorophyl was cleanedup with acidwashed active charcoal.Tolclofosmethyl residue was seperated with OV1 stationary phase and determined with FPD.The recoveries ranged from 905% to 1060%,coefficient variation from 110% to 583%,minimum determination quantity(MDQ)was 7010-14 g,and minimum determination concentration(MDC)ranged from 3010-5 mg/kg to 210-4 mg/kgT5H
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1999年第2期101-104,共4页
Journal of Nanjing Agricultural University
基金
国家科委"星火计划"项目
关键词
气相色谱
甲基立枯磷
油菜
油菜籽
土壤
残留量
gas chromatography(GC)
tolclofosmethyl residues
rape
rapeseed
soil
