化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2015年
1期
51-54
,共4页
康长安%吴志强%李秀峰%王乐%何娟%彭刚华
康長安%吳誌彊%李秀峰%王樂%何娟%彭剛華
강장안%오지강%리수봉%왕악%하연%팽강화
气质联用法%多农药残留%转换溶剂%动态降解%清洗效果
氣質聯用法%多農藥殘留%轉換溶劑%動態降解%清洗效果
기질련용법%다농약잔류%전환용제%동태강해%청세효과
GC-MS%multi-residues%exchange solvent%degradation%washing effect
采用气质联用仪建立了长豆角中27种农药残留的快速检测方法。用乙酸乙酯萃取样品,萃取液浓缩后用二氯甲烷定容,进行GC–MS分析。结果表明,27种农药测定结果的相对标准偏差为5.38%~22.35%(n=6),检出限在0.00385~0.03529 mg/kg之间,加标回收率为71.50%~119.30%。用所建方法研究了14种农药在长豆角上喷施后的残留情况。该方法样品处理简单快速,溶剂用量少,可用于长豆角中多种农药残留分析。
採用氣質聯用儀建立瞭長豆角中27種農藥殘留的快速檢測方法。用乙痠乙酯萃取樣品,萃取液濃縮後用二氯甲烷定容,進行GC–MS分析。結果錶明,27種農藥測定結果的相對標準偏差為5.38%~22.35%(n=6),檢齣限在0.00385~0.03529 mg/kg之間,加標迴收率為71.50%~119.30%。用所建方法研究瞭14種農藥在長豆角上噴施後的殘留情況。該方法樣品處理簡單快速,溶劑用量少,可用于長豆角中多種農藥殘留分析。
채용기질련용의건립료장두각중27충농약잔류적쾌속검측방법。용을산을지췌취양품,췌취액농축후용이록갑완정용,진행GC–MS분석。결과표명,27충농약측정결과적상대표준편차위5.38%~22.35%(n=6),검출한재0.00385~0.03529 mg/kg지간,가표회수솔위71.50%~119.30%。용소건방법연구료14충농약재장두각상분시후적잔류정황。해방법양품처리간단쾌속,용제용량소,가용우장두각중다충농약잔류분석。
A method for rapid determination of 27 pesticides residues by GC–MS was established. Samples were extracted by ethyl acetate and then determined by GC–MS in dichloromethane. The relative standard deviations of 27 pesticides residues detection results were 5.38%~22.35%(n=6), the detection limits ranged from 0.003 85 to 0.035 29 mg/kg, and the recoveries were 71.50%–119.30%. The degradation of 14 pesticides was studied by the method. The method is simple and fast,uses less solvent,so it can be used for determination of multi-residues in beanstalk.