Monitoring and evaluating the control effect of dust suppressant on heavy metals based on ecological and health risks: a
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RESEARCH ARTICLE
Monitoring and evaluating the control effect of dust suppressant on heavy metals based on ecological and health risks: a case study of Beijing Ruipeng Tong 1 & Yingqian Fang 1 & Boling Zhang 1 & Yiran Wang 1 & Xiaoyi Yang 1 Received: 14 August 2020 / Accepted: 12 November 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Dust suppressant is widely applied to control the road dust pollution, while the unified statement on its control effect has not been obtained. To fill this gap, an experiment was conducted at four typical sites in Beijing, where dust suppressant and water were sprayed at test and control sites, respectively. Samples were collected to analyze the concentrations of PM2.5, PM10, and heavy metals. With the application of potential ecological risk index and probabilistic health risk assessment, the ecological and health risks of heavy metals were obtained. Results showed that compared with control sites, the total concentrations of heavy metals in PM10 and PM2.5 at test sites decreased by 1555.40 and 784.95 ng/m3 in 14 days, with the suppression rate of 11.95% and 12.06%. Especially, the total ecological risks of heavy metals in PM10 reduced from 165.77 to 143.64, with their ecological hazard level changed from medium to slight. The carcinogenic risks of PM2.5 and PM10 reduced by 0.60Eā05 and 1.52Eā06, respectively. As for the non-carcinogenic risks, there were a reduction of 5.78% and 12.28% for PM2.5 and PM10, respectively. Notably, the ecological risk of Pb was the highest; Cr and Zn contributed the most to carcinogenic and non-carcinogenic risk. Finally, to mitigate road dust pollution from an integration perspective, some preventive measures were proposed. Keywords Dust suppressant . Control effect . Heavy metals . Particulate matter . Ecological risk . Health risk
Introduction With the rapid development of cities and the large increase in motor vehicles, increasing attention has been paid to the problem of heavy metal pollution caused by road traffic in recent years (Duan et al. 2012; Keshavarzi et al. 2015; Hong et al. 2020). Heavy metals are widely distributed in the atmosphere, water, soil and organisms (Jin et al. 2019; Yu et al. 2019; Olawoyin et al. 2018). Moreover, due to the characteristics of high enrichment and low migration, heavy metals cannot be degraded and generally accumulate in the environment and pose significant risks to the ecological systems (Roy et al.
Responsible Editor: Lotfi Aleya * Xiaoyi Yang [email protected] 1
School of Emergency Management and Safety Engineering, China University of Mining and Technology ā Beijing, Beijing 100083, China
2019). On the other hand, heavy metals are recognized as one of the most harmful pollutants because they can attach to particulate matter (including PM10 and PM2.5) and become enriched after entering the human body through inhalation intake, oral intake and dermal contact (Ali et al. 2017; Cui et al. 2018; Han et al. 2020; Ahn et al. 2020), which may lead to central nervous system disorde
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