Cycling is often promoted as a means of reducing vehicular congestion, greenhouse gases, noise and air pollutant emissions in urban areas. It is also endorsed as a healthy means of transportation in terms of reducing the risk of developing a range of physical and psychological conditions. However, people might not be aware of the negative health impacts of cycling near heavy traffic. This study aimed to compare personal exposure with particulate air pollution among cyclists commuting in Perth, Western Australia. The study involved 122 number of cyclists riding bicycles in four different routes: two routes within community areas (Route 1 and Route 2) and two routes near freeways (Route 3 and Route 4). The participants were males and females aged between 20 and 55 years with the selection criteria including non-smokers who cycle at least 150 km/week—ideally along one of the four study routes. Personal exposure of respirable particulate air pollution during cycling at the high and low level of exertions (self-perceived) were assessed. Ambient concentrations of selected air pollutants were also measured at each cycling route. We found that Route 3 appeared to be the most polluted route and concentrations of nitrogen dioxide and sulphur dioxide exceeded the Australian standards. This study concluded that personal exposure to respirable particles was influenced by the speed, time of cycling and seasonal variation.

中文翻译：

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骑行者暴露于空气污染物：西澳大利亚珀斯不同骑行路线的比较

骑自行车经常被宣传为减少城市地区车辆拥堵、温室气体、噪音和空气污染物排放的一种手段。它还被认为是一种健康的交通工具，可以降低发展一系列身体和心理状况的风险。然而，人们可能没有意识到在交通繁忙的地方骑自行车对健康的负面影响。本研究旨在比较西澳大利亚珀斯骑自行车通勤者的个人暴露与颗粒物空气污染。该研究涉及 122 名骑自行车的人在四个不同的路线上骑自行车：社区内的两条路线（路线 1 和路线 2）和高速公路附近的两条路线（路线 3 和路线 4）。参与者是年龄在 20 至 55 岁之间的男性和女性，选择标准包括每周至少骑行 150 公里的非吸烟者——最好沿着四个研究路线之一。评估了在高强度和低强度运动（自我感知）下骑行期间可吸入颗粒物空气污染的个人暴露情况。还在每条骑行路线上测量了选定空气污染物的环境浓度。我们发现 3 号公路似乎是污染最严重的路线，二氧化氮和二氧化硫的浓度超过了澳大利亚的标准。该研究得出的结论是，个人接触可吸入颗粒的情况受速度、骑车时间和季节变化的影响。评估了在高强度和低强度运动（自我感知）下骑行期间可吸入颗粒物空气污染的个人暴露情况。还在每条骑行路线上测量了选定空气污染物的环境浓度。我们发现 3 号公路似乎是污染最严重的路线，二氧化氮和二氧化硫的浓度超过了澳大利亚的标准。该研究得出的结论是，个人接触可吸入颗粒的情况受速度、骑车时间和季节变化的影响。评估了在高强度和低强度运动（自我感知）下骑行期间可吸入颗粒物空气污染的个人暴露情况。还在每条骑行路线上测量了选定空气污染物的环境浓度。我们发现 3 号公路似乎是污染最严重的路线，二氧化氮和二氧化硫的浓度超过了澳大利亚的标准。该研究得出的结论是，个人接触可吸入颗粒的情况受速度、骑车时间和季节变化的影响。