Butler J D, Crossley P
Sci Total Environ. 1979 Jan;11(1):53-8. doi: 10.1016/0048-9697(79)90032-9.
Particle-size distribution studies of polycyclic aromatic hydrocarbons in city and sub-urban atmospheres indicate that these compounds are associated with particles having MMD values of about 0.5 micrometer. Ambient airborne concentrations of pyrene, chrysene, benzo[a]pyrene, benzo[e]pyrene and coronene at suburban sites between 11 and 17 km from a city centre are shown to be approximately similar inside and outside detached residential houses. At all sites, monitored chrysene appears in highest concentration in the range 4-7 ng m-3, followed by benzo[a]pyrene and benzo[e]pyrene between 2-4 ng m-3, with coronene generally less than 1 ng m-3. By taking benzo[a]pyrene as a typical example of this class of compounds, these results indicate that the lungs of sub-urban populations will be exposed to about 34 ng of benzo[a]pyrene per day. This background amount is roughly equivalent to the exposure to this chemical experienced by the lung when one cigarette is smoked per day.
对城市和郊区大气中多环芳烃的粒径分布研究表明，这些化合物与质量中值直径约为0.5微米的颗粒物有关。在距离市中心11至17公里的郊区站点，独立住宅内外芘、屈、苯并[a]芘、苯并[e]芘和晕苯的环境空气浓度显示大致相似。在所有站点，监测到的屈浓度最高，范围在4 - 7纳克/立方米，其次是苯并[a]芘和苯并[e]芘，在2 - 4纳克/立方米之间，晕苯通常低于1纳克/立方米。以苯并[a]芘作为这类化合物的典型例子，这些结果表明，郊区人群的肺部每天将接触到约34纳克的苯并[a]芘。这个背景量大致相当于每天吸一支烟时肺部接触到这种化学物质的量。
