摘要
目的:研究日常烧菜油烟中十一烷、十二烷、十八烷、二十烷4种烷烃混合物一次性吸附、一次分离的定量分析方法。方法:采用溶剂解吸型活性炭采样管吸附油烟后,进行溶剂(CS2)解析,样品在气相色谱上用毛细管柱进行分离,外标法峰面积定量,分析这4种烷烃化合物的含量。结果:上述4种物质的回归曲线相关系数均大于0.998,样品平均解析率为85%~98%,相对标准偏差为0.76%~1.6%,检出限在0.10μg/mL^0.20μg/mL之间。结论:该方法可以一次进样快速检测上述烷烃在油烟中的含量,简便、准确,重现性好。
Objective： To study the deter mination method for four kinds of alkane mixtures including undecane, dodecane, octadeeane, eieosane in day - to - day cooking oil fumes by once disposable adsorption and once disposable separation. Methods： Cooking oil fumes was collected by the solvent - desorption activated carbon sampling tube, then four kinds of alkenes mixtures were desorbed by solvent（ CS2 ） and separated on capillary column, quantiffed by the external standard method. Results： With this method, the correlation coefficients of the regression curve of above - mentioned four kinds of alkenes mixtures are greater than 0. 998, the average desorption rate of sample was from 85% to 98% , the relative standard deviation was from 0.76% to 1.6% , the detection limit was between 0.10 μg/mL N 0.20 μg/mL. Conclusion： This method is rapid for deter ruination of abovementioned four kinds of alkanes in cooking oil fumes with a single injection, with accuracy and good reproducibility.
出处
《中国卫生检验杂志》
北大核心
2013年第7期1695-1697,共3页
Chinese Journal of Health Laboratory Technology
关键词
油烟
烷烃混合物
气相色谱分析
Cooking oil fumes
Alkane mixtures
Gas chromatography analysis
