挥发性物质多指低沸点烃、醇、酮及卤代烃类化学物,人体可呼吸吸入,又有一定比例以原型从呼出气中排出。工业中常用的有机溶剂如苯、甲苯、二甲苯、三氯乙烯等皆属之,它们具有较高的脂溶性和挥发性,对接触此类物质的工人进行生物监测,以评价其接触水平是极为重要的。目前,生物监测中常用的生物材料有血、尿、呼出气等,Brugnone等提出以呼出气作为评价接触此类物质的生物材 More volatile substances refers to low boiling point hydrocarbons, alcohols, ketones and halogenated hydrocarbon chemicals, the human body can breathe inhalation, and a certain percentage of the prototype exhale exhaled. Commonly used in the industry are organic solvents such as benzene, toluene, xylene, trichlorethylene and the like, which have high lipophilicity and volatility, and biological monitoring of workers exposed to such substances to assess their level of exposure Extremely important. At present, biological materials commonly used in biological monitoring include blood, urine, exhaled breath, etc. Brugnone et al. Propose to use exhaled breath as a biomaterial for evaluating contact with such substances