不同粒径空气颗粒物中11种多环芳烃的分析测定

The analysis of eleven kinds polycyclic aromatic hydrocarbons in the atmosphere particulates of different diameter

将五段多孔冲击分级器 (粒径分级 :≤ 1 .1 ,1 .1～ 2 .0 ,2 .0～ 3 .3 ,3 .3～ 7.0 ,≥ 7.0μm)与大流量采样器连接 ,采集呼和浩特市冬夏两季空气颗粒物样品 ,用高压液相色谱仪 (HPLC)测定样品中的蒽 (An)、菲 (Ph)、萤蒽 (Fl)、芘 (Py)、(Ch)、苯并 [a]蒽 (Ba A)、苯并 [a]芘 (Ba P)、二甲基苯并 [a]蒽 (DMBa A)、二苯并 [ah]蒽 (DBah A)、苯并 [ghi] (Bghi P)和晕苯 (Cor)等 1 1种多环芳烃化合物 (PAHs)。数据表明 :呼和浩特市空气颗粒物中 PAHs的浓度较高 ;有约 97%的 PAHs富集于可吸入颗粒中。

The atmospheric particulates were collected in the urban area of Huhehaote in winter and summer using a five laminated multiple divisible impacted (the diamerers of particulates are as follows:≤1 1, 1 1～2 0, 2 0～3 3, 3 3～7 0, ≥7 0μm) connected with a big flow collecting sampler The eleven kinds of polycyclic aromatic hydrocarbons (PAHs) in the sample, that is Phen, Anth, Flua, Pyer, BaAn, Chry, BaP, DMBaAn, DbahAn, BghiP, Cor were detected by using HPLC The follow results were obtained: the content of PAHs distributed in particulates could be inhaled was about 97% The concentration of PAHs was high in the urban area of Huhehaote city