School of Emergency Management and Safety Engineering, China University of Mining and Technology - Beijing, Beijing, 100083, China.
Environ Geochem Health. 2021 Oct;43(10):4139-4162. doi: 10.1007/s10653-021-00866-6. Epub 2021 Mar 29.
Although dust suppressants are widely applied to control road dust pollution, a consensus on their effectiveness has not been reached. To evaluate the effectiveness of dust suppressants (a calcium-magnesium complex) from health risks and health damage, spraying and sampling activities were conducted at four sites in Beijing. Using inhalation risk model and health damage assessment, health risks of PM for three sensitive occupational groups were calculated and converted to life and economic loss. Results revealed that dust suppressants can indeed mitigate PM pollution and its accompanying health risks and health damage in road dust, but at a limited efficiency. By spraying dust suppressants, the total PM-related life loss reduced by 1.60E-02 years and 2.50E-04 years in urban and suburban areas on average, and the total willingness to pay (WTP) values decreased by 120 and 50 US$ for PM and PM, indicating a more considerable environmental gain if dust suppressants were sprayed in additional regions when necessary. Overall, our study demonstrated that the effectiveness of dust suppressants cannot be pictured only by the variations of pollutant concentrations, and indicators with practice and economic value should be more useful for traffic-related pollution management.
尽管防尘剂被广泛应用于控制道路扬尘污染，但对于其有效性尚未达成共识。为了评估防尘剂（钙镁复合物）的有效性及其对健康的风险和损害，在北京的四个地点进行了喷雾和采样活动。采用吸入风险模型和健康损害评估方法，计算了三种敏感职业人群因 PM 造成的健康风险，并将其转化为生命和经济损失。结果表明，防尘剂确实可以减轻道路扬尘中 PM 污染及其伴随的健康风险和损害，但效率有限。通过喷洒防尘剂，市区和郊区的 PM 相关生命损失分别减少了 1.60E-02 年和 2.50E-04 年，PM 和 PM 的总意愿支付（WTP）值分别减少了 120 美元和 50 美元，表明如果在必要时在其他地区喷洒防尘剂，将会带来更大的环境收益。总体而言，本研究表明，不能仅通过污染物浓度的变化来描述防尘剂的有效性，而具有实践和经济价值的指标对于交通相关污染管理更为有用。
