高速公路附近的排氣污染-影響範圍

高速公路附近來自於機動車輛排氣的污染:對於心肺健康風險的流行病學證據回顧

Near-highway pollutants in motor vehicle exhaust: A review of epidemiologic evidence of cardiac and pulmonary health risks

Ultrafine particle size distribution (top panel) and normalized particle number concentration for different size ranges (bottom panel) as a function of distance from a highway in Los Angeles. From Zhu et al. (8). Reprinted with permission from Elsevier.

我所關心的是,多少距離才可以屏除大部分的風險.從圖上看起來是150m以上污染物即降低非常多,300m基本上與上風處無差異.

Reference
Near-highway pollutants in motor vehicle exhaust: A review of epidemiologic evidence of cardiac and pulmonary health
Key studies on air pollution and health effects near high-traffic areas