中国卫生标准管理
中國衛生標準管理
중국위생표준관리
China Health Standard Management
2015年
26期
136-137
,共2页
有机氯农药%萃取%前处理
有機氯農藥%萃取%前處理
유궤록농약%췌취%전처리
Organochlorine pesticides%Extraction%Pretreatment
目的：采用涡旋振荡提取法、超声波提取法和索式提取法测定菜干、茶叶和陈皮等植物性食物的有机氯农药残留量，比较提取率和回收率。方法称取粉碎样品与丙酮-石油醚混合均匀后，震荡提取上清液，重复3次，最后经吹氮仪浓缩后，加入硫酸或硫酸钠摇振、离心，取上清液进行色谱分析。结果采用以上三种提取方法检测的结果无差异，8种异构体回收率均较好，涡旋振荡提取法、超声波提取法和索式提取法的回收率分别为：85%～105%，82%～110%、84%～115%，回收率均满足检测要求，由于漩涡振荡法所耗时间更短，因此更推荐用此法作为植物性食物的有机氯农药残留的检测法。8种农药异构体在0.5～250 g/L的浓度范围线性良好，相关系数r为0.9984～1.0000，检测限可达0.10～0.65 g/L。结论涡旋震荡提取发因所耗溶剂最少，用时短，成本低等优点，可推广应用于植物性食品的有机氯农药残留的检测。
目的：採用渦鏇振盪提取法、超聲波提取法和索式提取法測定菜榦、茶葉和陳皮等植物性食物的有機氯農藥殘留量，比較提取率和迴收率。方法稱取粉碎樣品與丙酮-石油醚混閤均勻後，震盪提取上清液，重複3次，最後經吹氮儀濃縮後，加入硫痠或硫痠鈉搖振、離心，取上清液進行色譜分析。結果採用以上三種提取方法檢測的結果無差異，8種異構體迴收率均較好，渦鏇振盪提取法、超聲波提取法和索式提取法的迴收率分彆為：85%～105%，82%～110%、84%～115%，迴收率均滿足檢測要求，由于漩渦振盪法所耗時間更短，因此更推薦用此法作為植物性食物的有機氯農藥殘留的檢測法。8種農藥異構體在0.5～250 g/L的濃度範圍線性良好，相關繫數r為0.9984～1.0000，檢測限可達0.10～0.65 g/L。結論渦鏇震盪提取髮因所耗溶劑最少，用時短，成本低等優點，可推廣應用于植物性食品的有機氯農藥殘留的檢測。
목적：채용와선진탕제취법、초성파제취법화색식제취법측정채간、다협화진피등식물성식물적유궤록농약잔류량，비교제취솔화회수솔。방법칭취분쇄양품여병동-석유미혼합균균후，진탕제취상청액，중복3차，최후경취담의농축후，가입류산혹류산납요진、리심，취상청액진행색보분석。결과채용이상삼충제취방법검측적결과무차이，8충이구체회수솔균교호，와선진탕제취법、초성파제취법화색식제취법적회수솔분별위：85%～105%，82%～110%、84%～115%，회수솔균만족검측요구，유우선와진탕법소모시간경단，인차경추천용차법작위식물성식물적유궤록농약잔류적검측법。8충농약이구체재0.5～250 g/L적농도범위선성량호，상관계수r위0.9984～1.0000，검측한가체0.10～0.65 g/L。결론와선진탕제취발인소모용제최소，용시단，성본저등우점，가추엄응용우식물성식품적유궤록농약잔류적검측。
Objective Vortexed extraction method, determination of organochlorine pesticide residues in dried vegetables, tea and orange peel and other plant foods, compare the extraction rate and recovery ultrasonic extraction and Soxhlet extraction.MethodsWeigh crushed sample with acetone - petroleum ether mixed, shock supernatant was repeated three times, the last after blowing nitrogen concentrated, adding sulfuric acid or sodium shaken, centrifuged and the supernatant was chromatographed .Results The results of the above three extraction methods detect no difference, eight kinds of isomers of recovery are good, vortexed extraction, ultrasonic extraction recovery method and Soxhlet extraction were as follows: 85%~105%,82%~110%、84%~115%, recoveries are to meet testing requirements, since the vortex method a shorter amount of time spent, and therefore more recommend this method as a plant food organochlorine pesticide residue detection method. 8 pesticide isomers 0.5~250 g / L concentration range a good linear correlation coefficient r = 0.9984~1.000 0, the detection limit of 0.10~0.65 g/L. Conclusion The Vortex solvent extraction hair due to the consumption of the least, with time short, low cost, can be extended organochlorine pesticide residues in applied plant foods.
