The major source of particulate air pollution in Hong Kong is vehicle emission. The study employed Microenvironment monitoring technique to access the exposure of pedestrians to respirable suspended particulate (RSP) at roadside. A total of 62 roadside sites in 14 districts representing four different land use categories were selected. They covered most urbanized and densely populated area. MINIVol portable samplers were used for RSP sampling. The range of roadside exposure for 24-hour average RSP was from 46.03 to 337.4 #mu g/m~3 and the average of RSP was 112.95 #mu# g/m~3. Due to the different characteristics of land use, the average concentration and temporal variation were different. The field data was compared with the data of Environmental Protection Department (EPD) measured at low roof top and at a street level station.
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机译：香港的微粒空气污染的主要来源是车辆废气。该研究采用微环境监测技术，使行人在路边接触可呼吸的悬浮颗粒物（RSP）。总共选择了14个地区的62个路边站点，分别代表四种不同的土地利用类别。它们覆盖了大多数城市化和人口稠密的地区。 MINIVol便携式采样器用于RSP采样。 24小时平均RSP的路边暴露范围为46.03至337.4 #mu g / m〜3，RSP的平均值为112.95＃mu＃g / m〜3。由于土地利用的特点不同，平均浓度和时间变化也不同。将现场数据与环境保护部（EPD）在低屋顶和街道站上测得的数据进行了比较。
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