Qian Bing, Hu Yonghua, Xu Minggao, Yang Jiuzhong, Liu Chengyuan, Pan Yang
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, P. R. China.
Center of Technology, China Tobacco Anhui Industrial Co, Ltd., Hefei, Anhui 230088, P. R. China.
J Am Soc Mass Spectrom. 2023 Dec 6;34(12):2680-2690. doi: 10.1021/jasms.3c00259. Epub 2023 Nov 20.
Cooking oil fumes are an intricate and dynamic mixture containing a variety of poisonous and hazardous substances, and their real-time study remains challenging. Based on tunable synchrotron radiation photoionization mass spectrometry (SR-PIMS), isomeric/isobaric compounds in the gaseous oil fumes from oleic acid thermal oxidation were determined in real time and distinguished by photoionization efficiency (PIE) curve simulation combined with multiple linear regression (MLR) analysis. A series of common carcinogens such as formaldehyde, acetaldehyde, acrolein, and several unreported chemicals including diethyl ether and formylcyclohexane were successfully characterized. Moreover, time-resolved profiles of certain components in gaseous oil fumes were monitored for 55 h. Distinct evolutionary processes were observed, indicating the consumption and formation of parent molecules, intermediates, and final products.
食用油油烟是一种复杂的动态混合物，含有多种有毒有害物质，对其进行实时研究仍然具有挑战性。基于可调谐同步辐射光电离质谱（SR-PIMS），实时测定了油酸热氧化产生的气态油烟中的同分异构体/同量异位素化合物，并通过光电离效率（PIE）曲线模拟结合多元线性回归（MLR）分析对其进行了区分。成功鉴定出一系列常见致癌物，如甲醛、乙醛、丙烯醛，以及几种未报道的化学物质，包括乙醚和甲酰环己烷。此外，对气态油烟中某些成分的时间分辨谱进行了55小时的监测。观察到了明显的演化过程，表明母体分子、中间体和最终产物的消耗和形成。
