CAJ | 학술논문

分别采用不同的前处理方法处理土壤、植株和玉米样品．土壤样品以水为提取剂，振荡提取，液液分配净化；玉米植株样品和玉米样品以乙腈为提取剂，振荡提取，氨基柱净化．样品中硝磺草酮的残留量采用高效液相色谱－紫外检测器测定．硝磺草酮在0．05～0．4 mg／L范围内线性良好，相关系数为0．9999．土壤、玉米植株以及玉米样品的平均加标回收率分别为88．8％～100．0％、94．0％～109．0％、103．2％～109．0％，相对标准偏差在2．2％～10．6％之间．
분별채용불동적전처리방법처리토양、식주화옥미양품．토양양품이수위제취제，진탕제취，액액분배정화；옥미식주양품화옥미양품이을정위제취제，진탕제취，안기주정화．양품중초광초동적잔류량채용고효액상색보－자외검측기측정．초광초동재0．05～0．4 mg／L범위내선성량호，상관계수위0．9999．토양、옥미식주이급옥미양품적평균가표회수솔분별위88．8％～100．0％、94．0％～109．0％、103．2％～109．0％，상대표준편차재2．2％～10．6％지간．
Several pretreatment methods were used for analysis of mesotrione in soil , corn straw and corn .Residues in soil were extracted by water , purified by liquid-liquid extrac-tion.Corn plant samples and corn samples were extracted by acetonitrile and purified by a SPE-Amino.The mesotrione residues in samples were determined by high performance liq-uid chromatography with UV detector .The linear range was 0.05~0.4 mg/L with the corre-lation coefficient of 0.999 9.The recoveries were in the range of 88.8% ~100.0%, 94.0%~109.0%and 103.2%~109.0%, with relative standard deviations ( RSD) of 2. 2%~10.6%for the soil, corn straw and corn samples , respectively.