色谱
色譜
색보
CHINESE JOURNAL OF CHROMATOGRAPHY
2014年
7期
784-788
,共5页
胡业琴%郗存显%曹淑瑞%王国民%李贤良%张雷%张云怀
鬍業琴%郗存顯%曹淑瑞%王國民%李賢良%張雷%張雲懷
호업금%치존현%조숙서%왕국민%리현량%장뢰%장운부
介孔氧化铝%固相萃取%气相色谱%有机磷农药%蔬菜%水果%茶叶
介孔氧化鋁%固相萃取%氣相色譜%有機燐農藥%蔬菜%水果%茶葉
개공양화려%고상췌취%기상색보%유궤린농약%소채%수과%다협
mesoporous alumina%solid-phase extraction( SPE)%gas chromatography( GC)%organophosphorous pesticides%vegetables%fruits%tea
利用气相色谱检测技术,建立了能应用于白菜、生菜、南瓜、洋葱、番茄、白萝卜、苹果、梨及茶叶等不同基质中16种有机磷农药残留的检测方法。样品采用乙酸乙酯提取,经以合成的介孔氧化铝作吸附剂的固相萃取柱净化, DB-1701毛细管柱分离,气相色谱-火焰光度检测器检测。结果表明,蔬菜、水果及茶叶基质中16种有机磷农药在10~2000μg/L范围内具有良好的线性关系( R2﹥0.997);平均回收率为83.2%~103.8%,相对标准偏差为2.0%~9.9%。该方法灵敏度高、准确度高、重复性好,可适用于蔬菜、水果及茶叶基质中16种有机磷残留量的同时测定。
利用氣相色譜檢測技術,建立瞭能應用于白菜、生菜、南瓜、洋蔥、番茄、白蘿蔔、蘋果、梨及茶葉等不同基質中16種有機燐農藥殘留的檢測方法。樣品採用乙痠乙酯提取,經以閤成的介孔氧化鋁作吸附劑的固相萃取柱淨化, DB-1701毛細管柱分離,氣相色譜-火燄光度檢測器檢測。結果錶明,蔬菜、水果及茶葉基質中16種有機燐農藥在10~2000μg/L範圍內具有良好的線性關繫( R2﹥0.997);平均迴收率為83.2%~103.8%,相對標準偏差為2.0%~9.9%。該方法靈敏度高、準確度高、重複性好,可適用于蔬菜、水果及茶葉基質中16種有機燐殘留量的同時測定。
이용기상색보검측기술,건립료능응용우백채、생채、남과、양총、번가、백라복、평과、리급다협등불동기질중16충유궤린농약잔류적검측방법。양품채용을산을지제취,경이합성적개공양화려작흡부제적고상췌취주정화, DB-1701모세관주분리,기상색보-화염광도검측기검측。결과표명,소채、수과급다협기질중16충유궤린농약재10~2000μg/L범위내구유량호적선성관계( R2﹥0.997);평균회수솔위83.2%~103.8%,상대표준편차위2.0%~9.9%。해방법령민도고、준학도고、중복성호,가괄용우소채、수과급다협기질중16충유궤린잔류량적동시측정。
A gas chromatographic method based on solid-phase extraction was developed for the simultaneous determination of 16 organophosphorous pesticides in vegetables,fruits and tea,including cabbage,lettuce,pumpkin,onion,tomato,turnip,apple,pear and tea. The samples were extracted with ethyl acetate,and clean-up with mesoporous alumina as solid-phase extraction adsorbent. The separation of target compounds was performed on a DB-1701 capillary column,and the quantitative analysis of the organophosphorous pesticides was carried out by gas chromatography with flame photometric detection. The results showed that the cali-bration curves of the 16 organophosphorous pesticides were linear in the range of 10-2 000μg/L with good correlation coefficients(R2﹥0. 997). The recoveries of the pesticides in differ-ent samples at three spiked levels ranged from 83. 2% to 103. 8% with the relative standard devi-ations of 2. 0%-9. 9%. This method has high sensitivity,high accuracy and good repeatability, and can be applied to the determination of the organophosphorus pesticide residues in vegeta-bles,fruits and tea.