Oliveira M, Slezakova K, Delerue-Matos C, Pereira M C, Morais S
REQUIMTE, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto, Portugal.
LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Porto, Portugal.
Indoor Air. 2015 Oct;25(5):557-68. doi: 10.1111/ina.12164. Epub 2014 Oct 24.
This work aims to characterize levels and phase distribution of polycyclic aromatic hydrocarbons (PAHs) in indoor air of preschool environment and to assess the impact of outdoor PAH emissions to indoor environment. Gaseous and particulate (PM1 and PM(2.5)) PAHs (16 USEPA priority pollutants, plus dibenzo[a,l]pyrene, and benzo[j]fluoranthene) were concurrently sampled indoors and outdoors in one urban preschool located in north of Portugal for 35 days. The total concentration of 18 PAHs (ΣPAHs) in indoor air ranged from 19.5 to 82.0 ng/m(3) ; gaseous compounds (range of 14.1-66.1 ng/m(3)) accounted for 85% ΣPAHs. Particulate PAHs (range 0.7-15.9 ng/m(3)) were predominantly associated with PM1 (76% particulate ΣPAHs) with 5-ring PAHs being the most abundant. Mean indoor/outdoor ratios (I/O) of individual PAHs indicated that outdoor emissions significantly contributed to PAH indoors; emissions from motor vehicles and fuel burning were the major sources.
这项工作旨在表征学前教育环境室内空气中多环芳烃（PAHs）的水平和相分布，并评估室外PAH排放对室内环境的影响。在葡萄牙北部一座城市的一所幼儿园内和室外，同时对气态和颗粒态（PM1和PM2.5）PAHs（16种美国环保署优先污染物，加上二苯并[a,l]芘和苯并[j]荧蒽）进行了35天的采样。室内空气中18种PAHs（ΣPAHs）的总浓度范围为19.5至82.0 ng/m³；气态化合物（范围为14.1 - 66.1 ng/m³）占ΣPAHs的85%。颗粒态PAHs（范围为0.7 - 15.9 ng/m³）主要与PM1相关（颗粒态ΣPAHs的76%），其中五环PAHs含量最高。各PAHs的室内/室外平均比值（I/O）表明，室外排放对室内PAH有显著贡献；机动车和燃料燃烧排放是主要来源。
