摘要
建立了生晒参、全须生晒参中19种有机氯农药残留的毛细管气相色谱分析方法.对样品中六六六的4种异构体、滴滴涕的5种异构体、四氯苯胺、六氯苯、五氯硝基苯、七氯、五氯苯胺、艾氏剂、百菌清、环氧七氯、狄氏剂及异狄氏剂共19种有机氯农药的残留量进行了测定.以石油醚-丙酮混合物作为提取剂,样品采用索氏提取,提取液用弗罗里硅土柱层析净化.采用OV-1701石英毛细管气相色谱柱分离样品, ECD检测器进行检测.在3个水平添加时的回收率（n=5）分别为75.7%～ 96.1%、78.8%～ 111.6%和81.7%～115.2%;相对标准偏差分别为2.4%～ 10.6%、2.1%～ 9.8%和1.4～ 10.0%.方法用于生晒参和全须生晒参样品中农药残留的测定,结果满意.
A new method for analysis of nineteen organochlorine pesticide residues in white ginseng and white ginseng with fibrous root in Jilin province is proposed. Nineteen organochlorine pesticide residues, including a-benzene hexaclhloride （ BHC ）,β-BHC, γ-BHC, δ-BHC, o, p＇-dichloro-diphenyl-dichloroethylene （ o, p＇- DDE ） ,p, p＇-DDE, p, p ＇-dichloro-diphenyl-dichloroethane （ p, p＇-DDD ）, o, p＇- dichloro-diphenyl-trichloroethane （ op＇- DDT） ,p ,p＇-DDT, tetrachloroaniline （ TCA）, hexachlorobenzene （ HCB ）, pentachloronitrobenzene （PCNB） , heptachlor（ HEPT）, aldrin, chlorothalonil （ CTO）, heptachlor epoxide （ HCE）, diedrin, and endrin were determined. The organochlorine pesticides were extracted from ginseng with mixed solvents of acetone and light petroleum （ 1 ： 1, V/V） by soxhlet extraction. Extracts were cleand-up by alumina neutral-florisil column. Then the extract was separated by capillary column （25 m × 0.25 mm i. d. 0.5 μm） and detected by electron-capture detector. The recoveries abtained from ginseng samples （n = 5 ） at three concentration levels were in the ranges of 75.7% - 96.1%, 78.8% - 111.6% and 81.7% - 115.2%, with relative standard deviations of 2.4% - 10. 6%, 2.1% -9.8% and 1.4% - 10.0% respectively. A satisfactory result was obtained in determination of organochlorine pesticide residues in white ginseng and white ginseng with fibrous root.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2006年第10期1482-1486,共5页
Chinese Journal of Analytical Chemistry
关键词
毛细管气相色谱法
有机氯农药
全须生晒参
Capillary gas chromatography, organochlorine pesticide, white ginseng with fibrous root
