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一种融合多特征聚类与神经网络的PM<sub>2.5sub>小时浓度预测新模型及其在中国城市的应用 Article

刘辉, 龙治豪, 段铸, 施惠鹏

《工程（英文）》 2020年 第6卷 第8期   页码 944-956 doi: 10.1016/j.eng.2020.05.009

摘要：

PM<sub>2.5sub>浓度预测对空气污染物早期预警具有重要意义。本文提出一种改进的PM<sub>2.5sub>浓度多步预测模型，即多特征聚类分解(MCD)-回声状态网络(ESN)-粒子群优化(PSO)混合模型。该模型包括分解预测部分和优化预测部分。在MCD方法中，采用RSAR算法选择重要的空气污染物变量，使用KC算法对所得变量进行聚类，利用EWT算法将PM<sub>2.5sub>浓度序列的聚类结果分解为多个子层。利用我国4个不同城市的真实PM<sub>2.5sub>浓度数据，验证了所提出模型的有效性。实验结果表明，所提出预测模型适用于PM<sub>2.5sub>浓度的多步高精度预测，具有比基准模型更优的预测性能。

关键词： PM<sub>2.5sub>2.5浓度预测     PM<sub>2.5sub>2.5浓度聚类     经验小波分解     多步预测    

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Diverse bacterial populations of PM in urban and suburb Shanghai, China

《环境科学与工程前沿（英文）》 2021年 第15卷 第3期 doi: 10.1007/s11783-020-1329-7

摘要：

• Urban aerosols harbour diverse bacterial communities in Shanghai.

关键词： PM2.5     Bacteria     16S rRNA     SEM analysis     Shanghai City    

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Temporal variation of PM-associated health effects in Shijiazhuang, Hebei

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1376-0

摘要：

•Annual mean PM2.5 in Shijiazhuang were 87, 95, and 82 µg/m3 in 2015–2017.

关键词： PM2.5     Health effects     Integrated exposure-response model     Shijiazhuang    

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PM2.5 over North China based on MODIS AOD and effect of meteorological elements during 2003‒2015

Youfang Chen, Yimin Zhou, Xinyi Zhao

《环境科学与工程前沿（英文）》 2020年 第14卷 第2期 doi: 10.1007/s11783-019-1202-8

摘要： The Taihang Mountains was the boundary between high and low pollution areas. There were one high value center for PM2.5 pollution and two low value centers. In 2004, 2009 and after 2013, PM2.5 concentration was relatively low. Over the past 40 years, PM2.5 pollution in North China has become increasingly serious and progressively exposes the densely populated areas to pollutants. However, due to limited ground data, it is challenging to estimate accurate PM2.5 exposure levels, further making it unfavorable for the prediction and prevention of PM2.5 pollutions. This paper therefore uses the mixed effect model to estimate daily PM2.5 concentrations of North China between 2003 and 2015 with ground observation data and MODIS AOD satellite data. The tempo-spatial characteristics of PM2.5 and the influence of meteorological elements on PM2.5 is discussed with EOF and canonical correlation analysis respectively. Results show that overall R2 is 0.36 and the root mean squared predicted error was 30.1 μg/m3 for the model prediction. Our time series analysis showed that, the Taihang Mountains acted as a boundary between the high and low pollution areas in North China; while the northern part of Henan Province, the southern part of Hebei Province and the western part of Shandong Province were the most polluted areas. Although, in 2004, 2009 and dates after 2013, PM2.5 concentrations were relatively low. Meteorological/topography conditions, that include high surface humidity of area in the range of 34°‒40°N and 119°‒124°E, relatively low boundary layer heights, and southerly and easterly winds from the east and north area were common factors attributed to haze in the most polluted area. Overall, the spatial distribution of increasingly concentrated PM2.5 pollution in North China are consistent with the local emission level, unfavorable meteorological conditions and topographic changes.

关键词： Aerosol optical depth     PM2.5     MODIS     Mixed effect model     Canonical correlation analysis    

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Local and regional contributions to PM in the Beijing 2022 Winter Olympics infrastructure areas during

《环境科学与工程前沿（英文）》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1434-2

摘要：

• Regional transportation contributed more than local emissions during haze episodes.

关键词： 2022 Winter Olympics     PM2.5     Source apportionment    

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Understand the local and regional contributions on air pollution from the view of human health impacts

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1382-2

摘要：

• PM2.5-related deaths were estimated to be 227 thousand in BTH & surrounding regions.

关键词： PM2.5     Regional transport     Local emissions     Health impact     Environmental inequality    

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Source apportionment of PM

Wei WEN,Shuiyuan CHENG,Lei LIU,Gang WANG,Xiaoqi WANG

《环境科学与工程前沿（英文）》 2016年 第10卷 第5期 doi: 10.1007/s11783-016-0839-9

摘要： The new hybrid approaches for the source apportionment of PM were proposed. The hybrid approach can be used for source apportionment of secondary species. The metallurgy industry was the biggest contribution source to PM of Tangshan. In winter, the contribution from the coal-fired boilers was the largest one. The objective of this paper is to propose a hybrid approach for the source apportionment of primary and secondary species of PM in the city of Tangshan. The receptor-based PMF (Positive Matrix Factorization) is integrated with the emission inventory (EI) to form the first hybrid method for the source apportionment of the primary species. The hybrid CAMx-PSAT-CP (Comprehensive Air Quality Model with Extensions – Particulate Source Apportionment Technology – Chemical Profile) approach is then proposed and used for the source apportionment of the secondary species. The PM sources identified for Tangshan included the soil dust, the metallurgical industry, power plants, coal-fired boilers, vehicles, cement production, and other sources. It is indicated that the PM pollution is a regional issue. Among all the identified sources, the metallurgy industry was the biggest contribution source to PM , followed by coal-fired boilers, vehicles and soil dust. The other-source category plays a crucial role for PM , particularly for the formation of secondary species and aerosols, and these other sources include non-specified sources such as agricultural activities, biomass combustion, residential emissions, etc. The source apportionment results could help the local authorities make sound policies and regulations to better protect the citizens from the local and regional PM pollution. The study also highlights the strength of utilizing the proposed hybrid approaches in the identification of PM sources. The techniques used in this study show considerable promise for further application to other regions as well as to identify other source categories of PM .

关键词： Secondary species     Emission inventory     PM2.5     Source apportionment    

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Spatial and Temporal Distribution of PM

Xiao-hong Chen,Xiang-bo Tang

《工程管理前沿（英文）》 2016年 第3卷 第2期   页码 171-181 doi: 10.15302/J-FEM-2016017

摘要： Utilizing the initial hourly monitoring data of PM concentrations at 23 monitoring sites across the Chang-Zhu-Tan city cluster between January 2013 and February 2014 that released in Real-time Air Quality Reporting System in Hunan Province, this paper draws diagrams and analyzes the change rule of the pollutants concentration over time. In addition, this paper studies the regional distribution of PM seasonal pollution in the vicinity of the monitoring sites using ArcGIS geographic information system with the Kriging interpolation method. On this basis, this paper puts forward some effective control strategies to cope with regional PM pollution combined with the information of industry distribution and development status in the Chang-Zhu-Tan city cluster.

关键词： PM2.5     spatial and temporal distribution     ArcGIS     the chang-Zhu-Tan city cluster    

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Particle size distributions, PM

Can DONG, Lingxiao YANG, Chao YAN, Qi YUAN, Yangchun YU, Wenxing WANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第1期   页码 55-65 doi: 10.1007/s11783-012-0411-1

摘要： In this study, we collected particles with aerodynamic diameter≤2.5 μm (PM ) from three different public indoor places (a supermarket, a commercial office, and a university dining hall) in Jinan, a medium-sized city located in northern China. Water-soluble inorganic ions of PM and particle size distributions were also measured. Both indoor and outdoor PM levels (102.3–143.8 μg·m and 160.2–301.3 μg·m , respectively) were substantially higher than the value recommended by the World Health Organization (25 μg·m ), and outdoor sources were found to be the major contributors to indoor pollutants. Diurnal particle number size distributions were different, while the maximum volume concentrations all appeared to be approximately 300 nm in the three indoor locations. Concentrations of indoor and outdoor PM were shown to exhibit the same variation trends for the supermarket and dining hall. For the office, PM concentrations during nighttime were observed to decrease sharply. Among others, , and were found to be the dominant water-soluble ions of both indoor and outdoor particles. Concentrations of in the supermarket and office during the daytime were observed to decrease sharply, which might be attributed to the fact that the indoor temperature was much higher than the outdoor temperature. In addition, domestic activities such as cleaning, water usage, cooking, and smoking also played roles in degraded indoor air quality. However, the results obtained here might be negatively impacted by the small number of samples and short sampling durations.

关键词： indoor air quality     indoor/outdoor ratios     size distributions     particles with aerodynamic diameter≤2.5 μm (PM2.5)     water-soluble ions    

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Estimating the effects of meteorology on PM

Liu YANG, Ye WU, Jerry M. DAVIS, Jiming HAO

《环境科学与工程前沿（英文）》 2011年 第5卷 第3期   页码 331-341 doi: 10.1007/s11783-011-0307-5

摘要： Particulate pollution was a critical challenge to the promise of good air quality during the 2008 Beijing Olympic Games, which took place from August 8th to 24th. To ensure good air quality for the Games, several temporary emission control measures were implemented in Beijing and surrounding areas. Ambient particulate matter concentration decreased significantly during the Olympic period; however, it is difficult to distinguish the effectiveness of those control measures since meteorology also affects ambient PM concentration. In this work, a multiple linear regression model based on continuous field monitoring at a roadside site was conducted to evaluate the effects of meteorology and emission control measures on the reduction of PM during the 2008 Olympic Games. The hourly data set was divided into two time periods, the no control period, June 22nd to July 4th, and the control period, July 28th to August 21st. The response variable was PM and the meteorology covariates used in the model were hourly temperature, dew point temperature, wind speed and precipitation. Wind direction was not a significant predictor of PM levels in either the control or the no control period. Using the meteorologically-based regression coefficients from the two time periods, meteorology was found to contribute to at least a 16% reduction in PM levels in the roadside microenvironment; while the pollution control measures contributed to at least a 43% reduction in PM levels.

关键词： meteorology     emission control measures     Beijing Olympic Games     PM2.5     linear statistical models    

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Chemical characteristics of fine particulate matter emitted from commercial cooking

Bing PEI,Hongyang CUI,Huan LIU,Naiqiang YAN

《环境科学与工程前沿（英文）》 2016年 第10卷 第3期   页码 559-568 doi: 10.1007/s11783-016-0829-y

摘要： The chemical characteristics of fine particulate matter (PM ) emitted from commercial cooking were explored in this study. Three typical commercial restaurants in Shanghai, i.e., a Shanghai-style one (SHS), a Sichuan-style one (SCS) and an Italian-style one (ITS), were selected to conduct PM sampling. Particulate organic matter (POM) was found to be the predominant contributor to cooking-related PM mass in all the tested restaurants, with a proportion of 69.1% to 77.1%. Specifically, 80 trace organic compounds were identified and quantified by gas chromatography/mass spectrometry (GC/MS), which accounted for 3.8%–6.5% of the total PM mass. Among the quantified organic compounds, unsaturated fatty acids had the highest concentration, followed by saturated fatty acids. Comparatively, the impacts of other kinds of organic compounds were much smaller. Oleic acid was the most abundant single species in both SCS and ITS. However, in the case of SHS, linoleic acid was the richest one. ITS produced a much larger mass fraction of most organic species in POM than the two Chinese cooking styles except for monosaccharide anhydrides and sterols. The results of this study could be utilized to explore the contribution of cooking emissions to PM pollution and to develop the emission inventory of PM from cooking, which could then help the policy-makers design efficient treatment measures and control strategies on cooking emissions in the future.

关键词： commercial cooking     PM2.5     chemical characteristics     organic matter    

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Does environmental infrastructure investment contribute to emissions reduction? A case of China

Xiaoqian SONG, Yong GENG, Ke LI, Xi ZHANG, Fei WU, Hengyu PAN, Yiqing ZHANG

《能源前沿（英文）》 2020年 第14卷 第1期   页码 57-70 doi: 10.1007/s11708-019-0654-7

摘要： Environmental infrastructure investment (EII) is an important environmental policy instrument on responding to greenhouse gas (GHG) emission and air pollution. This paper employs an improved stochastic impact by regression on population, affluence and technology (STRIPAT) model by using panel data from 30 Chinese provinces and municipalities for the period of 2003–2015 to investigate the effect of EII on CO emissions, SO emissions, and PM pollution. The results indicate that EII has a positive and significant effect on mitigating CO emission. However, the effect of EII on SO emission fluctuated although it still contributes to the reduction of PM pollution through technology innovations. Energy intensity has the largest impact on GHG emissions and air pollution, followed by GDP per capita and industrial structure. In addition, the effect of EII on environmental issues varies in different regions. Such findings suggest that policies on EII should be region-specific so that more appropriate mitigation policies can be raised by considering the local realities.

关键词： environmental infrastructure investment (EII)     CO2 emission     SO2 emission     PM2.5 pollution     stochastic impact by regression on population     affluence and technology (STIRPAT) model     governance    

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Analysis of Flue Gas Pollutants Deep-removal Technology in Coal-fired Power Plants

Xiao-lu Zhang

《工程管理前沿（英文）》 2014年 第1卷 第4期   页码 336-340 doi: 10.15302/J-FEM-2014061

摘要： In recent years, frequent haze has made PM become a public hotspot. PM control has been added to the 2012 release “ambient air quality standard.” Currently flue gas pollutant control technology does not easily remove PM . Developing Flue Gas Pollutant Deep-removal Technology (DRT) for coal-fired power plants for deep-removing pollutants such as PM , SO , SO , and heavy metals, is an urgent problem. Based on the analysis of the necessity and existing problems of developing DRT suitable for China, this study focused on PM removal technology, low NO emission of ultra supercritical boiler under all load conditions, and the adaptability of SCR working temperature. Finally, the flue gas pollutant removal system at a 2×660MW supercritical power plant was introduced, and the roadmap for developing DRT for 1,000MW ultra supercritical units was analyzed.

关键词： Coal-fired power plant     flue gas pollutants     deep-removal     PM2.5 removal    

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地基超光谱立体遥感网络——一种探究中国PM<sub>2.5sub>和O<sub>3sub>协同控制的新策略 Article

刘诚, 邢成志, 胡启后, 李启华, 刘浩然, 洪茜茜, 谈伟, 季祥光, 林华, 陆川, 林继楠, 刘瀚洋, 魏少聪, 陈健, 杨昆鹏, 王顺天, 柳婷, 陈羽佳

《工程（英文）》 2022年 第19卷 第12期   页码 71-83 doi: 10.1016/j.eng.2021.02.019

摘要：

进入“十四五”，PM<sub>2.5sub>（空气动力学当量直径≤2.5 μm的颗粒物）和O<sub>3sub>的协同控制成为我国大气污染防治的重大课题PM<sub>2.5sub>、O<sub>3sub>及其前体物的立体监测对于实现协同控制至关重要。然而，目前的监测网络不足以同时实现监测PM<sub>2.5sub>和O<sub>3sub>的垂直分布及支持空气质量控制。该立体监测网络为我国PM<sub>2.5sub>和O<sub>3sub>的区域协同控制提供了重要机遇。该地基超光谱立体遥感网络为支持PM<sub>2.5sub>、O<sub>3sub>及其前体物的管控和溯源提供了一种非常具有前景的策略。

关键词： 多轴差分吸收光谱仪     立体监测     区域传输     臭氧生成     控制策略    

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The R&D of Flue Gas Pollutants Deep-Removal Technology for Coal-fired Power Plants

Xiao-lu Zhang

《工程管理前沿（英文）》 2015年 第2卷 第4期   页码 359-363 doi: 10.15302/J-FEM-2015057

摘要： The flue gas pollutants deep-removal technology (DRT) focusing on PM removal is the prime method of further reducing pollutants emission from coal-fired power plants. In view of the four key technological challenges in developing the DRT, studies were conducted on a series of purification technologies and the DRT was developed and successfully applied in 660 MW and 1000 MW coal-fired units. This paper analyzes the application results of the demonstration project, and proposes a roadmap for the follow-up researches and optimizations.

关键词： coal-fired power plant     pollutants emission reduction     PM2.5     flue gas pollutants     deep-removal    

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标题 作者 时间 类型 操作

一种融合多特征聚类与神经网络的PM<sub>2.5sub>小时浓度预测新模型及其在中国城市的应用

刘辉, 龙治豪, 段铸, 施惠鹏

期刊论文

Diverse bacterial populations of PM in urban and suburb Shanghai, China

期刊论文

Temporal variation of PM-associated health effects in Shijiazhuang, Hebei

期刊论文

PM2.5 over North China based on MODIS AOD and effect of meteorological elements during 2003‒2015

Youfang Chen, Yimin Zhou, Xinyi Zhao

期刊论文

Local and regional contributions to PM in the Beijing 2022 Winter Olympics infrastructure areas during

期刊论文

Understand the local and regional contributions on air pollution from the view of human health impacts

期刊论文

Source apportionment of PM

Wei WEN,Shuiyuan CHENG,Lei LIU,Gang WANG,Xiaoqi WANG

期刊论文

Spatial and Temporal Distribution of PM

Xiao-hong Chen,Xiang-bo Tang

期刊论文

Particle size distributions, PM

Can DONG, Lingxiao YANG, Chao YAN, Qi YUAN, Yangchun YU, Wenxing WANG

期刊论文

Estimating the effects of meteorology on PM

Liu YANG, Ye WU, Jerry M. DAVIS, Jiming HAO

期刊论文

Chemical characteristics of fine particulate matter emitted from commercial cooking

Bing PEI,Hongyang CUI,Huan LIU,Naiqiang YAN

期刊论文

Does environmental infrastructure investment contribute to emissions reduction? A case of China

Xiaoqian SONG, Yong GENG, Ke LI, Xi ZHANG, Fei WU, Hengyu PAN, Yiqing ZHANG

期刊论文

Analysis of Flue Gas Pollutants Deep-removal Technology in Coal-fired Power Plants

Xiao-lu Zhang

期刊论文

地基超光谱立体遥感网络——一种探究中国PM<sub>2.5sub>和O<sub>3sub>协同控制的新策略

刘诚, 邢成志, 胡启后, 李启华, 刘浩然, 洪茜茜, 谈伟, 季祥光, 林华, 陆川, 林继楠, 刘瀚洋, 魏少聪, 陈健, 杨昆鹏, 王顺天, 柳婷, 陈羽佳

期刊论文

The R&D of Flue Gas Pollutants Deep-Removal Technology for Coal-fired Power Plants

Xiao-lu Zhang

期刊论文