青岛大气气溶胶中多环芳烃的GC/MS分析

GC/MS ANALYSIS OF POLYCYCLIC AROMATIC HYDROCARBONS IN AEROSOL IN QINGDAO AREAS

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

The composition of polycyclic aromatic hydrocarbons(PAHs)in aerosol samples collected from five districts in Qingdao were analyzed using GC-MS technique.The difference of the contents of PAHs were compared and discussed.The main sources of these PAHs are anthropogenic emissions.Burning of coal in rural area and exhaust emissions from vehicles and boats were suggested to be the predominant pollution sources for the organic pollutants in the ambient atmosphere.