The impacts of pollution control measures on PM2.5 reduction: Insights of chemical composition, source variation and health risk

Zheng, Huang; Kong, Shaofei; Yan, Qishe; Wu, Feng; Cheng, Yi; Zheng, Shurui; Wu, Jian; Yang, Guowei; Zheng, Minghui; Tang, Lili; Yin, Yan; Chen, Kui; Zhao, Tianliang; Liu, Dantong; Li, Shuanglin; Qi, Shihua; Zhao, Delong; Zhang, Tao; Ruan, Jujun; Huang, Mingzhi

doi:10.1016/j.atmosenv.2018.10.023

Cited by 74 publications

(31 citation statements)

References 95 publications

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“…However, the pollution of PM 2.5 in Chengdu was much higher than the annual secondary guideline value (35 µg m −3 , Ambient air quality standards/GB3095-2012) and the World Health Organization annual guideline value (10 µg m −3 ). The same PM 2.5 pollution problem was also a serious problem in Beijing and Nanjing (Ji et al, 2019;Zheng et al, 2019). The annual average mass concentration of NSA also changed significantly, and the difference was large.…”

Section: Pollution Characteristics Of the Interannual And Entire Obsementioning

confidence: 93%

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Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM<sub>2.5</sub> in Chengdu, southwest China, based on 3-year measurements

et al. 2020

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Abstract. Nitrate, sulfate and ammonium (NSA) are the main secondary inorganic aerosols of PM2.5 and play an important role in air pollution. In this study, a 3-year observational experiment was conducted from 1 January 2015 to 31 December 2017, in Chengdu, southwest China. NSA pollution characteristics, chemical conversion generation, emission reduction control sensitivity and pollutant regional transport characteristics were analyzed. NSA are the most important chemical compositions of particles with aerodynamic equivalent diameter ≤2.5 µm in ambient air (PM2.5), and the contribution of nitrate to the accumulation of PM2.5 concentration is greater than that of sulfate and ammonium. NSA also have obvious characteristics of annual, monthly, seasonal, diurnal and weekly variations. Through observation data and model simulation, it was also found that the existence of an aerosol aqueous environment plays an important role in the formation and existence of NSA. Sensitivity analysis between NSA found that controlling NO3- and SO42- plays an important role in reducing the contribution of NSA to PM2.5, which also implies that the current control of NOx and SO2 is important for improving air pollution. Combined with meteorological conditions and potential source contribution function (PSCF) analysis, local emissions and regional emissions of pollutants are found to have important impacts on Chengdu's atmospheric environment. This research result not only provides an assessment of the current atmospheric emission reduction effect but also provides an important reference for atmospheric pollution control.

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Section: Pollution Characteristics Of the Interannual And Entire Obsementioning

confidence: 93%

“…The Sichuan Basin is among the most important areas of air pollution in China (Qiao et al, 2019;Gui et al, 2019;Zhong et al, 2019). Although there are many studies in this area, there are few long-term studies of the hourly concentration data resolution of PM 2.5 chemical compositions.…”

Section: Introductionmentioning

confidence: 99%

Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM<sub>2.5</sub> in Chengdu, southwest China, based on 3-year measurements

et al. 2020

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“…The secondary sources (secondary sulfate, secondary nitrate, and secondary organic aerosol) are also considered to be the main sources in most cities [5][6][7]. Depending on the natural condition and industrial structure, each city has its specific sources for PM 2.5 , such as dust, biomass burning, ironmaking, glass manufacturing, steel plants, and so on [5][6][7][8][9][10][11]. Therefore, to find the PM 2.5 sources in a specific city, source apportionment should be done.…”

Section: Introductionmentioning

confidence: 99%

“…It is highly important to study the characteristics of components, sources, and the environmental and health effects of PM 2.5 . A large number of previous studies focus on many well-developed regions such as Beijing-Tianjin-Hebei, the Yangtze River Delta, and the Pearl River Delta [10,11]. There has been little research that focuses on other cities.…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition of PM2.5 and Its Impact on Inhalation Health Risk Evaluation in a City with Light Industry in Central China

et al. 2020

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A city with light industry in China was selected for the study of the chemical characteristics of PM2.5 and to assess its impact on inhalation health risks. During the period from May 2017 to February 2018, a total of 382 PM2.5 filter samples were collected across four seasons (15–20 days for each season). The results showed that the daily average PM2.5 concentration ranged from 21 to 255 µg/m3, with an annual average of 73 ± 49 µg/m3. SO42−, NO3−, NH4+, and organic matter (OM) were the dominant components, accounting for 13%, 20%, 11%, and 20% of annual PM2.5 mass loading, respectively. Compared with the clean periods, the meteorology of the pollution periods were mostly characterized by high relatively humidity, high temperature, and low wind speeds. Based on positive matrix factorization (PMF), the major source of PM2.5 was identified as secondary aerosols, contributing 28% and 49% on clean days and polluted days, respectively. The health risk assessment of heavy metals showed that non-carcinogenic hazard is not expected to occur, while Cr contributed the highest cancer risk. This study is helpful for the advancement of our scientific understanding of PM2.5 pollution and its impact on health in cities with light industries.

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“…The PM2.5 pollution is caused by primary PM2.5 directly discharged by the pollution source and secondary PM2.5 generated by the reaction of various pollutants in the atmosphere. In the case of serious pollution, secondary aerosols account for a higher proportion of total PM2.5, sometimes up to 70% [5]. As the city's main fossil energy consumer and secondary energy supplier, the thermal The associate editor coordinating the review of this manuscript and approving it for publication was Honghao Gao . and power industries contribute a lot to the PM2.5 concentration, which is second only to industrial production and motor vehicle emissions in autumn and winter [6].…”

Section: Introductionmentioning

confidence: 99%

Dispatch for Urban Integrated Heat and Power System Considering Secondary PM2.5 Under Smart Environmental Sensing

et al. 2019

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To improve the air quality and reduce the human settlement pollution, the effects of initial air pollutant emissions from urban heat and power generation with the diffusion of pollutants were often considered in the energy system dispatch, but the effects of secondary PM2.5 hazards caused by the urban energy system were almost ignored. In the urban integrated heat and power systems (UIHPS), under the support of smart environmental sensing, the introduction of integrated demand response (IDR) between the energy production side and consumer side is an effective means of reducing primary and secondary PM2.5 hazards. As for the diffusion of primary pollutants and the generation of secondary PM2.5 are affected by the uncertainty of weather conditions, a stochastic environmental economic dispatch (SEED) model for UIHPS considering IDR is proposed in this paper. Linearized secondary PM2.5 generation and diffusion functions for UIHPS dispatch are introduced into the objective function. The price-based IDR is performed on the Stackelberg game mechanism, and the game equilibrium solution is transformed as the SEED's constraint set by using the backward induction method. Simulations show that under the partly data supply from smart environmental sensing, the SEED model considering the secondary PM2.5 and IDR can effectively alleviate the comprehensive hazard of PM2.5 under severe haze weather. INDEX TERMS Environmental-economic dispatch, integrated heat and power system, secondary pm2.5, integrated demand response, Stackelberg game.

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The impacts of pollution control measures on PM2.5 reduction: Insights of chemical composition, source variation and health risk

Cited by 74 publications

References 95 publications

Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM<sub>2.5</sub> in Chengdu, southwest China, based on 3-year measurements

Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM<sub>2.5</sub> in Chengdu, southwest China, based on 3-year measurements

Chemical Composition of PM2.5 and Its Impact on Inhalation Health Risk Evaluation in a City with Light Industry in Central China

Dispatch for Urban Integrated Heat and Power System Considering Secondary PM2.5 Under Smart Environmental Sensing

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The impacts of pollution control measures on PM2.5 reduction: Insights of chemical composition, source variation and health risk

Cited by 74 publications

References 95 publications

Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM&lt;sub&gt;2.5&lt;/sub&gt; in Chengdu, southwest China, based on 3-year measurements

Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM&lt;sub&gt;2.5&lt;/sub&gt; in Chengdu, southwest China, based on 3-year measurements

Chemical Composition of PM2.5 and Its Impact on Inhalation Health Risk Evaluation in a City with Light Industry in Central China

Dispatch for Urban Integrated Heat and Power System Considering Secondary PM2.5 Under Smart Environmental Sensing

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Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM<sub>2.5</sub> in Chengdu, southwest China, based on 3-year measurements

Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM<sub>2.5</sub> in Chengdu, southwest China, based on 3-year measurements