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采集了青岛市 5个区的大气气溶胶样品并用气相色谱 -质谱技术分析测定了多环芳烃的含量。参照美国EPA 6 10方法 ,索氏抽提气溶胶样品 ,抽提物经硅胶 -氧化铝层析柱分离 ,用GC/MS分析鉴定多环芳烃。标准质谱库计算机检索定性 ,内标法定量。青岛市大气气溶胶中PAHs总量的总趋势是东部高于西部 ,中部高于南、北部。多环芳烃环数分布表明气溶胶中PAHs几乎全部由人类活动产生 ,来源为煤炭、木材、石油类的不完全燃烧。 16种优控制多环芳烃化合物中的萘、苊、芴、荧蒽、茚并 [1,2 ,3-cd]芘、苯并 [b]荧蒽、苯并 [k]荧蒽等有毒有害有机物污染物普遍检出于市内五区。苯并 [a]芘的大气含量甚微
Atmospheric aerosol samples were collected from five districts of Qingdao City and the contents of PAHs were determined by gas chromatography-mass spectrometry. According to the US EPA 6 10 method, Soxhlet extraction of aerosol samples, the extract was separated by silica gel - alumina column, GC / MS analysis identified polycyclic aromatic hydrocarbons. Standard mass spectral computer search qualitative, internal standard method. The general trend of the total amount of PAHs in atmospheric aerosols in Qingdao is that the eastern part is higher than the western part and the central part is higher than the southern part and the northern part. The PAHs distribution indicates that almost all PAHs in the aerosol are generated by human activities, and the sources are incomplete combustion of coal, wood and petroleum. The naphthalene, acenaphthene, fluorene, fluoranthene, indeno [1,2,3-cd] pyrene, benzo [b] fluoranthene and benzo [k] fluoranthene in 16 kinds of excellent controlled polycyclic aromatic hydrocarbons Organic pollutants are generally detected in the city five districts. Benzo [a] pyrene has little atmospheric content