毛细管柱气相色谱法测定人参中五氯硝基苯残留量  

DETERMINATION OF PENTACHLORONITROBENZENE IN GINGENG BY CAPILLARY COLUMN GAS CHROMATOGRAPHY

作　　者：赵晓松[1] 袁尔立[1] 孟亚黎[1] 赵明宪[1] 

机构地区：[1]吉林农业大学环保研究室

出　　处：《吉林农业大学学报》1991年第3期45-49,共5页Journal of Jilin Agricultural University

摘　　要：用毛管柱气相色谱法测定人参中痕量五氯硝基苯。样品用丙酮—石油醚(1:4V/V)萃取,硫酸净化,K—D浓缩后用25×φ0.2mm的SE—52毛管柱GC测定,ECD检出限为4.7×10^(-13)g(PCNB)。该法用于分析0.010～0.40ppm五氯硝基苯的人参样品,方法回收率为84～103％;标准差为2.8×10^(-3)～3.7×10^(-2);变异系数为4.8～10.3％。A capillary column gas chromatographic procedure is studied for determinating trace amounts of PCNB in Ginseng. The samples are extracted with acetone-petroleum ether (1: 4v/v) , puri-tied by sulfonation with sulfric acid, and concentrated with a micro K-D flask. A 25 m SE , -52 capillary column is used for GC determination and the detection limit of BCD is 4. 7 , 10'13g (PCNB). The methods has been used to analyze the samples of Ginseng fortified with varying amounts of PCNB in the range of 0. 010-0. 40ppm. Recoveries, standard deviation, and variation coefficient averaged from 84-103% , 0. 0023-0. 037, and 4. 8-10. 3% , respectively.

关 键 词：五氯硝基苯 残留量 人参 气相色谱 

分 类 号：S567.510.1[农业科学—中草药栽培]