多环芳烃(多环芳烃)是氢和碳的有机化合物,由无数的芳香环。有超过150个这样的包含两个或两个以上的苯环化合物,如萘(午睡)和蒽(蚂蚁)。多环芳烃是极性的,亲脂性的,主要发现在杂酚油等天然来源。他们也通过不完全燃烧产生的有机物质。现在,PAH污染的主要来源,是由人类活动和全球变化引起的。大多数通过大气中多环芳烃进入环境过程的燃烧和热解。各种食品中多环芳烃已经发现由于空气中多环芳烃的沉积,以及在受污染的水域捕鱼。多环芳烃也形成了在某些准备食物的方法,如用炭烧烤,烧烤,烤和油炸。呼吸道和皮肤是两个器官在人体最受多环芳烃。常见的症状包括太阳能皮炎、痤疮性皮炎和毛囊周炎。 Many countries and regions have regulations to prohibit and detect the compounds of PAHs.In 1982, the American Environmental Protection Agency (EPA) introduced 16 representative PAHs as priority compounds for the monitoring of pollutants5. In 2016, the Ministry of Ecology and Environment of the People’s Republic of China published a new series of decrees and regulations regarding PAHs in environmental areas such as soil, sediment, sludge and air. The regulations clearly list the detection methods and value limits for PAH compounds in different applications. In the regulations HJ 783-2016 and HJ 805-2016, they recommend the extraction of a solid sample using the Pressurized Fluid Extraction method (PFE, also known as Pressurized Solvent Extraction PSE) of lyophilized samples prior to analysis by GC-MS.
- (pdf) 短377号注意在污泥样品中多环芳烃的测定
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