气体中合成辣椒素的检测方法研究  

Studies on the determination of olepresin capsaicin in gas

作　　者：王红英[1] 牟瑛琳[1] 郝焕明[1] 宿世春[1] 聂凤泉[1] 

机构地区：[1]防化研究院第五研究所,北京102205

出　　处：《分析试验室》2009年第12期100-103,共4页Chinese Journal of Analysis Laboratory

摘　　要：研究了气体中合成辣椒素(OC)的固体吸附-气相色谱检测方法,建立了气体样品经XAD-2吸附后于CH2Cl2溶液中解析,采用毛细管色谱柱分离,FID检测器进行检测的技术途径。色谱柱:HP-5;载气:高纯氮气(1.2 mL/min);进样口温度:250℃;检测器温度:280℃;程序升温:初始温度180℃,保持0.5 min后以30℃/min的速率升至250℃保持5 min;对影响样品采集和检测的条件进行了选择研究,方法平均回收率为91.5%;平均相对标准偏差为3.2%(n=6);对气态OC的最低检出浓度为10μg/m3;在5.0～1000.0μg/mL范围内有良好的线形关系(r=0.9996)。A methods for monitoring synthesis of olepresin capsaicin （OC） in gas were developed with solid adsorptiongas chromatography in this paper. The gas samples were adsorbed on a sorbent （XAD-2）, and then desorbed in CH2 Cl2 solution. The solution containing OC was separated on the capillary column HP-5 （5 % phenyl methyl silox-ane, 30 m×320 μm i.d. ×0.25 μm） with N2 as carrier gas at a flow rate of 1.2 mL/min, H2（35 mL/min）, Air （350 mL/min）, Make up （N2 ： 25 mL/min）. Inlet and detector temperatures were 250 ℃ and 280 ℃, program temperature was from 180 ℃ to 250 ℃ at a rate of 30 ℃/min. Injection volume was 1μL with spilt mode. OC was detected by a flame ionization detector （FID）. The conditions that affected sampling and analysis were studied. The resuits indicate that the monitoring method has high sensitivity and selectivity. The average recovery was 91.5%, the relative standard deviation （RSD） was 3.2%. The detection limit of OC in gas was 10 μg/m^3 （signal-to-noise ratio of 3） and the linear relationship is good in the range of 5.0 - 1000.0μg/mL.

关 键 词：合成辣椒素 固体吸附 气相色谱 气体监测 

分 类 号：O557.7[理学—热学与物质分子运动论]