Shuiyuan Cheng's research while affiliated with Beijing University of Technology and other places

Publications (190)

Article
Continuous aggravated surface O3 over North China Plain (NCP) has attracted widely public concern. Herein, we evaluated the effects of changes in aerosols, precursor emissions, and meteorology on O3 in summer (June) of 2015–2019 over NCP via 8 scenarios with WRF-Chem model. The simulated mean MDA8 O3 in urban areas of 13 major cities in NCP increas...
Article
This study represents the first quantitative evaluation of pollution transport budget within the boundary layer of typical cities in the Beijing-Tianjin-Hebei (BTH) region from the perspective of horizontal and vertical exchanges and further discusses the impact of the atmospheric boundary layer (ABL)-free troposphere (FT) exchange on concentration...
Article
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Civil aviation is an important source of air pollutants, but this field has received insufficient attention in China. Based on the standard emissions model of the International Civil Aviation Organization (ICAO) and actual flight information from 241 airports, this study estimated a comprehensive emissions inventory for 2010–2020 by considering the...
Article
A variety of methods based on air quality models, including tracer methods, the brute-force method (BFM), decoupled direct method (DDM), high-order decoupled direct method (HDDM), response surface models (RSMs) and so on forth, have been widely used to study the transport of air pollutants. These methods have good applicability for the transport of...
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Accurate identification of source information (i.e., source strength and location) is crucial for the air pollution control or effective accidental response. Optimization inversion based on bio-inspired algorithms (BIOs) is an effective method for estimating source information. However, the impacts of different BIOs and the shared parameter of popu...
Article
Currently, the characteristics of volatile organic compounds (VOC) released from coking industry are still vague, and the widely used VOC emission factors (EFs) were still from the measurements of 1990s. Hence, focusing on coking industry, we conducted an in-situ measurement campaign in several typical plants, developed a set of VOC EFs for various...
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Co-pollution of surface O3 and PM2.5 has become the most predominant type of air pollutions in Beijing-Tianjin-Hebei region in the hot season since 2017, particularly in May–July. Analysis based on observational data showed that co-pollution was always accompanied by high temperature, moderate relative humidity, extremely high SO2, and higher NO2....
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Great changes occurred in the physical and chemical properties of the atmosphere in the North China Plain (NCP) in summer caused by PM2.5 dropping from 58 μg/m3 in 2015 to 36.0 μg/m3 in 2019. In this study, we first applied the WRF-Chem model to quantify the impact of PM2.5 reduction on shortwave radiation reaching the ground (SWDOWN), planetary bo...
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Source inversion is an effective approach for estimating air pollutant source parameters (e.g., source emission or source strength [Q 0 ], source horizontal location [x 0 , y 0 ], and release height [z 0 ]) in industrial activities or accidents. Air pollution events in the real world generally correspond to complex application scenarios arising fro...
Article
Volatile organic compounds (VOCs) have been explicitly required to be controlled by national or local governments to tackle heavy PM2.5 pollution in China. However, the role of VOCs chemistry in PM2.5 is still far away from being fully understood. In this study, we selected a typically industrialized city of China, conducted VOCs online measurement...
Article
Beijing-Tianjin-Hebei and the surrounding area (BTHSA) shows the poorest air quality in China, reflected in sub-standard PM2.5 and increasingly pronounced O3 pollution, stressing the urgency for regional cooperation and collaborative control of PM2.5 and O3. With the aim to explore the cooperative regions and response mechanisms of PM2.5 and O3 in...
Article
Nationwide O3 has been deteriorating and shows an obvious spatial aggregation effect (SAE), while there are still many cities not meeting Chinese national standards for PM2.5, demonstrating the urgency for the collaborative control of PM2.5 and O3. This study adopted multiple mathematic models and data mining technologies, including Moran's I (MI),...
Article
Sulfate is one of the most important secondary components in atmospheric fine particles, especially in haze days, exerting a significant impact on haze formations. In this study a photochemical smog...
Article
Facing the elevated surface summer O3 over North China in recent years with the continuous NOx reduction, we conducted the ozone-precursor sensitivity study in summer (July) in Beijing–Tianjin–Hebei region (BTH) under the 2018 and 2014 emissions, based on WRF-Chem model. On 2018 emission condition, 30% precursor reduction simulations presented the...
Article
In this study, an advanced transport flux method based on the comprehensive stereoscopic observation verification was used to evaluate the contribution of transport to pollution in the North China Plain (NCP) and Sichuan Basin (SCB). The simulations were verified using fixed-point lidar and satellite observations, and the results demonstrated that...
Article
To effectively reduce the compound pollution of fine particulate matter (PM2.5) and ozone (O3), volatile organic compound (VOC) emission sources are being extensively studied. Studies on VOC emission characteristics have mainly focused on solvent-using and technological sources, while research on the combustion processes of high-energy-consuming in...
Preprint
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This paper aims to study the trend of aircraft emission in China. The multiyear emission inventories of HC, CO, NO X , SO 2 and PM 2.5 in the period 2010–2030 were developed. Results show that the total amount of all targeted pollutants from China's civil airports climbed from approximately 82407 tons in 2010 to 164275 tons in 2019. It is expected...
Article
Ammonia (NH3) discharged from agricultural activities to the atmosphere plays a crucial role in the formation of secondary inorganic aerosols. This study analyzed the temporal-spatial development of agricultural NH3 emissions from 2000 to 2018 in the Beijing–Tianjin–Hebei (BTH) region and assessed the effects of reducing PM2.5 by removing agricultu...
Article
In this study, distributed lag nonlinear models (DLNM) were built to characterize the non-linear exposure-lag-response relationship between the concentration of PM2.5 and O3 and multiple influencing factors, including basic meteorological elements and precursors. Then, a stratified analysis of different years, seasons, pollution levels, and wind di...
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The air quality of Handan, a typical industrial city in China, has been significantly improved through atmospheric pollution control, except for ozone (O3) pollution. We found that, in summer, emissions of anthropogenic volatile organic compounds (VOCs) and NOx decreased yearly in Handan, but the O3 concentration significantly declined yearly durin...
Article
Local pollution and the cross-boundary transmission of pollutants between cities have an inevitable impact on the atmosphere. Quantitative assessments of the contribution of transport to pollution in inland and coastal cities are necessary for the implementation of practical, regional, and joint emission control strategies. In this study, the Compr...
Article
Crop residue open burning has substantial negative effects on air quality, human health, and climate change, and accurate and timely estimates of its air pollutant emissions are essential. Open burning proportion (OBP) is the key parameter in estimating the emission from the crop residue open burning by bottom-up method. However, the OBP is mainly...
Article
Beijing has achieved significant air quality improvement over the past decade. In this study, we applied a simulation technique on pollutant monitoring data to investigate the contribution of emission reduction (ERE) and meteorological effects (ME) to the improvement of air quality. We measured the daily PM2.5 concentrations during four months (rep...
Article
This study conducted a VOCs monitoring campaign in Jul and Oct of 2018, Jan and Apr of 2019 in Beijing urban area, to explore the atmospheric oxidation capacity and its impact on PM2.5 there through investigating the chemical behaviors of VOCs at a 1-h time resolution. We totally detected 53 VOCs in the atmosphere over Beijing, sum of them (TVOCs)...
Article
Estimating accurately airborne pollutant emissions source information (source strength and location) is important for achieving effective air pollution management or adequate emergency responses to accidents. Inversion method is one of the useful tools to identify the source parameters. The atmospheric dispersion scheme has been proven to be the ke...
Article
A significant technique of combining simulation experiments with a long-term real-time field measurement was first deployed to explore impacts of various factors on formations of sulfate aerosol on the surface of mineral aerosols as MgO in the different reaction systems, and synergistic impacts of these factors on the formation of sulfate aerosols...
Article
Characteristics of submicron particulate matter, including its components, during December 5–30, 2016, were comprehensively investigated in Beijing. The surface transport flux was calculated as well as the cross-border transport influence of Beijing and the North China Plain (NCP) on Beijing University of Technology (BJUT) based on the non-refracto...
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Beijing, the capital city of China, has achieved remarkable progress in terms of an improvement in air quality under strict control policies in the past 10 years from various sources. In this paper, the characteristics of fine particulate matter (PM2.5) and O3 in January 2013 and 2018 in Beijing are discussed on the basis of daily sample analysis a...
Article
Atmospheric fine particulate pollution has been a dramatically environmental concern in all seasons in the megacity Beijing in recent years. A long-term real-time monitoring campaign of non-refractory submicron aerosol (NR-PM1) at a southeastern urban site in Beijing from July 13, 2017 to May 26, 2018 using an Aerodyne Aerosol Chemical Speciation M...
Article
Sodium-treated sepiolite (NaSep)-supported transition metal catalysts (TM/NaSep; TM = Cu, Fe, Ni, Mn, and Co) were synthesized via a rotary evaporation method. Physicochemical properties of the as-synthesized samples were characterized by means of various techniques, and their catalytic activities for HCHO (0.2%) oxidation were evaluated. Among the...
Article
Rural residential coal combustion (RRCC) has detrimental effects on air quality, climate, and human health. There are large uncertainties regarding emissions from RRCC owing to the lack of consideration of several key factors (e.g. combination modes of coal and stoves, combustion modes, and high temporal resolution). In this study, we provided a ne...
Article
Rural residential coal combustion (RRCC) for household heating is a potentially important source of air pollution. However, little research has been done on the environmental impacts of RRCC. This study therefore investigated the impacts of RRCC on air pollution based on detailed household heating data obtained from intensive face-to-face interview...
Article
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The Ce-Cu-SAPO-18 samples were prepared by the ion exchange method. Physicochemical properties of the samples were systematically characterized by a number of analytical techniques, and Ce doping and hydrothermal temperature effects on NH3-SCR activity of Cu-SAPO-18 were also investigated. The results show that doping of Ce increased NH3-SCR activi...
Article
A one-year observation of atmospheric peroxyacetyl nitrate (PAN) in the border of Beijing-Tianjin-Hebei (BTH) was conducted during 2018–2019 to assess the photochemical pollution in this region. PAN daily average was 2.23, 3.72, 5.34 and 2.44 ppb(v) in October, January, April and July. The higher PAN here compared to previous studies on urban Beiji...
Article
Accurate source inversion for sudden air pollution accidents (SAPAs) relies on forward dispersion models, and the dispersion parameter scheme is the key factor for modeling performance. However, the impacts of different schemes on source inversion have yet to be investigated. In this study, the performance of source inversion based on four empirica...
Article
The alkali metal (M = Na, K, Rb, and Cs)-modified C-FDU-15 (M-C-FDU-15(x); x was the M/C-FDU-15 molar ratio, and equal to 0.01−0.03) samples were prepared through an in situ process, and characterized by means of the TG, XRD, TEM, EDS, N2 adsorption-desorption, O2-TPD, and CO2-TPD techniques. The (NO + O2) adsorption mechanism was investigated usin...
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Lanthanide (La, Ce, Nd, Gd, Tb, Ho or Lu)-doped Cu-SAPO-18 samples were prepared using the ion-exchange method. Physicochemical properties of the samples were systematically characterized by a number of analytical techniques, and the effects of lanthanide doping on catalytic activity and hydrothermal stability of the Cu-SAPO-18 catalysts for the NH...
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The sodium-treated sepiolite (NaSep)-supported rare earth oxide (RE/NaSep; RE = La, Eu, Dy, and Tm) samples were prepared using the rotary evaporation method. Physicochemical properties of these materials were characterized by XRD, SEM, BET, FTIR, XPS, H2–TPR, NH3–TPD, and in situ DRIFTS, and their catalytic activities for formaldehyde (HCHO) (2000...
Article
North China is recognized as one of the region with most severe air pollution in China, and the PM2.5 in six major cities (Beijing, Tianjin, Shijiazhuang, Taiyuan, Jinan and Zhengzhou) of this region was measured to be 108.7–186.0 μg m⁻³ in January 2017 and 39.2–56.3 μg m⁻³ in July 2017. This study conducts the meteorological and chemical simulatio...
Article
The yCe/Al‐Mn‐pillared interlayered clay (PILC, y [Ce content] = 8–9 wt%) catalysts were prepared using the impregnation method. Catalytic activities of the materials for the selective catalytic reduction (SCR) of NO with NH3 at low temperatures were evaluated, and physicochemical properties of the samples were characterized by X‐ray diffraction, N...
Article
SO4²⁻, NO3⁻ and NH4⁺ (SNA) are the major components of particulate matter in Beijing. In this study, hourly concentrations of SNA in PM1 were measured through an Aerodyne Aerosol Chemical Speciation Monitor (ACSM) at an urban site of Beijing, from February 3rd to 20th of 2017. The analysis of the differences between two pollution cases during the s...
Article
Accurate and rapid predictions of air pollutant dispersion are important for effective emergency responses after sudden air pollution accidents (SAPA). Notably, dispersion parameters (σ) are the key variables that influence the simulation accuracy of dispersion models. Empirical dispersion schemes based on power-law formulas are probably appropriat...
Article
Both agricultural and construction machinery are important non-road sources of atmospheric pollution, with total hydrocarbons (THC), nitrogen oxides (NOx) and particulate matter (PM) emissions accounting for more than 60% of the total emissions from all non-road mobile sources in China. However, there exist relatively few efforts to establish the e...
Article
In this study, a novel electrochemiluminescence (ECL) biosensor based on CdSe@CdS quantum dots (QDs) functionalized MoS2 modified electrode was developed for sensitive detection of mercury ions. Polycationic poly(diallyldimethylammonium chloride) (PDDA) and negatively charged QDs were adsorbed on the surface of MoS2, in sequence, to form the MoS2-Q...
Article
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The Cu/SAPO-18 samples with different Cu/Al mass ratios were prepared, their catalytic activities for the NH3-SCR of NO in simulated diesel exhaust were evaluated, and effects of Cu/Al mass ratio and hydrothermal aging temperature on catalytic performance of Cu/SAPO-18 was examined. Physicochemical properties of the samples were characterized by me...
Article
Large ammonia (NH3) emissions contribute approximately 8-30% to the fine particle pollution in China and highlight the need for understanding the emission trends and mitigation effects of NH3 in the future. The purpose of this study is to predict the NH3 emissions and analyze the mitigation potential up to year 2040 by scenario analysis based on th...
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This paper focused on VOCs and their source apportionment in urban Beijing. Our monitoring measured 52 VOCs in July 2014 and January 2015. The concentration of VOCs was in the range of 14.5~95.2 ppb in July and 2.1~93.1 ppb in January, with the top five compounds of toluene (10.7%), ethane (6.9%), ethylene (6.3%), n-butane (5.7%), and propane (5.6%...
Article
The mixing layer height (MLH) plays an important role in atmospheric pollution by influencing the vertical diffusion of pollutants. The Aircraft Meteorological Data Relay (AMDAR) from the airports in Beijing (BJ) and Shijiazhuang (SJZ) during 2014–2017 was used to investigate temporal characteristics of the daily maximum MLH (MLHmax) and their rela...
Article
Air pollutant distributions identified through monitoring form an important basis for devising adequate emergency responses against sudden air pollution accidents (SAPAs). However, studies on the optimisation of monitoring layouts for SAPAs, which can help us better understand air pollutant dispersion, are lacking. We developed an emergency monitor...
Article
Beijing, one of the world's largest cities, has been tackling its severe air pollution problems in the past decades, and achieved pronounced reduction on PM2.5 concentration from 99.4 μg/m³ to 69.4 μg/m³ during 2013–2017. This study focused on the variation trends of SO4²⁻, NO3⁻ and NH4⁺ (SNA) of PM2.5 during this effective improvement period, thro...
Article
The contribution to fine particulate air pollution (PM2.5) from ammonia emissions has been proven to be significant. In China, agricultural sources contribute to the majority of ammonia emissions. It is necessary and valuable to explore air quality improvements caused by the mitigation of agricultural ammonia emissions. The purpose of this study wa...
Article
Beijing as the capital of China releases massive air pollutants and experiences the worsening summer O3 pollution recently. This study estimates Beijing ozone precursor emission, anthropogenic VOCs (AVOCs) being 325.3 kilotons in 2010, 231.8 kilotons in 2013 and 190.7 kilotons in 2015 and NOx being 211.3 kilotons in 2010, 238.3 kilotons in 2013 and...
Article
The Beijing–Tianjin–Hebei (BTH) region in the North China Plain (NCP) is significantly affected by inter–district, city and region transport, but systematic works on this aspect using flux calculation method remain insufficient. To obtain further insights into the temporal and spatial characteristics of PM2.5 flux, the Weather Research and Forecast...
Article
yCeO2/Zr-PILC (y = 2.5–7.4 wt%) catalysts were prepared using an impregnation method. The physiochemical properties of the materials were investigated by means of XRD, BET, XPS, H2-TPR, NH3-TPD, and in situ DRIFT techniques, and their catalytic activities were evaluated for the selective catalytic reduction of NO with ammonia (NH3-SCR). The 5CeO2/Z...
Article
In this study, an analysis framework based on the regular monitoring data was proposed for investigating the annual/inter-annual air quality variation and the contributions from different factors (i.e., seasons, pollution periods and airflow directions), through a case study in Beijing from 2013 to 2016. The results showed that the annual mean conc...
Article
SO4²⁻, NO3⁻ and NH4⁺ are the important components of PM2.5 in China. This study developed a modeling-monitoring coupled approach to determining the sources of SO4²⁻ and NO3⁻ as well as the secondary oxidation ratio of SO2 to SO4²⁻, through a monitoring of PM2.5 in Beijing and Tangshan, and a WRF-CAMx simulation over North China. Measurement showed...
Article
CMK-3 and C-FDU-15 samples were synthesized using hard-templating and evaporation-induced self-assembly (EISA) methods, respectively. The pore structures of CMK-3 and C-FDU-15 as well as commercial activated carbon were characterized by means of X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and N2...
Article
Regional transport always plays a crucial role in the formation and dissipation of haze over the Beijing–Tianjin–Hebei (BTH) region. This study, conducted using pollution and meteorological observations and the Weather Research and Forecasting model (WRF) coupled with the Comprehensive Air Quality Model with Extensions (CAMx), investigated the poss...
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Effects of hydrothermal aging at 80 and 850 °C on catalytic performance and stability of Cu/SAPO-34 catalysts with different Cu loadings were examined, and their catalytic activities were investigated for the selective catalytic reduction (SCR) of NOx with ammonia. Over the fresh catalysts, the NH3-SCR activity increased with the loading of copper...
Article
Hydrothermal stability of the Cu(A, N, Cl or S)/SAPO-34 samples derived from different Cu precursors (A: Cu-acetate; N: Cu-nitrate; Cl: Cu-chloride; and S: Cu-sulfate) was investigated. The physical and chemical properties of the samples were investigated by various analytical techniques, and their catalytic activities for NO conversion and NH3 oxi...
Article
Civil aircraft emissions during landing and takeoff (LTO) are important air pollutant sources, but have been given insufficient attention in China. Accurate estimation of these emissions is limited by a lack of important parameters, such as detailed flight information and the dynamic time in climb and approach modes during LTO that are dependent on...
Article
The real-time continuous measurements of non-refractory submicron aerosol (NR-PM1) species including organics (Org), sulfate (SO4²⁻), nitrate (NO3⁻), ammonium (NH4⁺) and chloride (Cl⁻) in winter from 10 December 2015 to 30 January 2016 in Beijing were performed with an Aerodyne Aerosol Chemical Speciation Monitor (ACSM). The average concentration o...
Article
Accurate identification of source parameters (source strength and location) of sudden air pollution accidents (SAPAs) is important for implementation of adequate responses. However, the potential impact of atmospheric diffusion conditions on source parameter identification may be significant. An inversion model that combines the hybrid particle swa...
Article
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Fine particulate matter (PM2.5) poses a risk to human health. In January 2017, the PM2.5 pollution in China was severe, and the average PM2.5 concentration had increased by 14.7% compared to that in January 2016. Meteorological conditions greatly influence PM2.5 pollution. The relationship between PM2.5 and meteorological factors was assessed using...
Article
SO42 − and NO3⁻ are important chemical components of fine particulate matter (PM2.5), especially during haze periods. This study selected two haze episodes in Beijing, China with similar meteorological conditions. A monitoring-modeling approach was developed to estimate the secondary conversion ratios of sulfur and nitrogen based on monitored and s...
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Large amounts of air pollutants emitted from massive coal combustion result in the air quality deterioration and threaten public health in China. To improve air quality, the Chinese government released the coal cap policy to reduce coal consumption. So it is important and necessary to understand the possible environmental impact and relevant health...