食品科学
食品科學
식품과학
FOOD SCIENCE
2009年
24期
401-404
,共4页
卢剑%武中平%高巍%俞幼芬
盧劍%武中平%高巍%俞幼芬
로검%무중평%고외%유유분
茶叶%有机氯和拟除虫菊酯类农药%多残留量%气相色谱双柱法%微电子捕获检测器
茶葉%有機氯和擬除蟲菊酯類農藥%多殘留量%氣相色譜雙柱法%微電子捕穫檢測器
다협%유궤록화의제충국지류농약%다잔류량%기상색보쌍주법%미전자포획검측기
tea%organochlorine and pyrethroid pesticides%multi residues%dual-column gas chromatography%μECD
采用气相色谱双柱法对茶叶中多种有机氯和拟除虫菊酯类农药残留量进行测定.样品用乙腈提取后,经Fiorisil固相萃取小柱净化,用DB-1701和DB-35ms毛细管气相色谱柱、微电子捕获检测器,对茶叶中多种有机氯和拟除虫菊酯类农药残留量的测定可取得满意的结果.该方法样品平均加标回收率为72.02%～119.23%,相对标准偏差为0.19%～9.56%;茶叶中有机氯和拟除虫菊酯类农药(除三唑醇、粉唑醇外)多残留检出限为0.4～40μg/kg.
採用氣相色譜雙柱法對茶葉中多種有機氯和擬除蟲菊酯類農藥殘留量進行測定.樣品用乙腈提取後,經Fiorisil固相萃取小柱淨化,用DB-1701和DB-35ms毛細管氣相色譜柱、微電子捕穫檢測器,對茶葉中多種有機氯和擬除蟲菊酯類農藥殘留量的測定可取得滿意的結果.該方法樣品平均加標迴收率為72.02%～119.23%,相對標準偏差為0.19%～9.56%;茶葉中有機氯和擬除蟲菊酯類農藥(除三唑醇、粉唑醇外)多殘留檢齣限為0.4～40μg/kg.
채용기상색보쌍주법대다협중다충유궤록화의제충국지류농약잔류량진행측정.양품용을정제취후,경Fiorisil고상췌취소주정화,용DB-1701화DB-35ms모세관기상색보주、미전자포획검측기,대다협중다충유궤록화의제충국지류농약잔류량적측정가취득만의적결과.해방법양품평균가표회수솔위72.02%～119.23%,상대표준편차위0.19%～9.56%;다협중유궤록화의제충국지류농약(제삼서순、분서순외)다잔류검출한위0.4～40μg/kg.
A dual column gas chromatography method for determination of organochlorine and pyrethroid pesticides residues in tea was developed. The samples were extracted with acetonitrile. The extracts were purified using florisil SPE column, and then separated with DB- 1701 and DB-35ms capillary columns, followed by detection with μECD. The average recoveries between 72.02% and 119.23%, relative standard deviations between 0.19% and 9.56% were obtained for spiked samples. The detection limits were 0.4～40 μg/kg(except triadimenol and flutriafol).
