Emission trends and source characteristics of SO2, NOx, PM10 and VOCs in the Pearl River Delta region from 2000 to 2009

Lu, Qihong; Zheng, Junyu; Ye, Siqi; Shen, Xingling; Yuan, Zibing; Yin, Shasha

doi:10.1016/j.atmosenv.2012.10.062

Cited by 108 publications

(65 citation statements)

References 19 publications

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“…SO 2 emissions in Guangdong Province gradually increased in the previous decade, e.g., 964, 1150, 1177 and 1258 Gg yr −1 in , 2007, respectively (Lu et al, 2010Zhao et al, 2013a). However, SO 2 emissions in PRD decreased by more than 40 % between 2005 and 2009, due to flue gas desulfurization facilities in power plants and large industrial boilers installed in this region (Lu et al, 2013). Meanwhile, NO x emissions increased in Guangdong Province as well as across the entire PRD, similar to the trends in BTH and YRD (Lu et al, 2013;Zhang et al, 2012b;Zhao et al, 2013b) emission trends of their respective gaseous precursors in Guangdong Province rather than PRD.…”

Section: The Pearl River Delta Region Interannual Variations In Guangmentioning

confidence: 99%

A review of current knowledge concerning PM2. 5 chemical composition, aerosol optical properties and their relationships across China

et al. 2017

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Abstract. To obtain a thorough knowledge of PM 2.5 chemical composition and its impact on aerosol optical properties across China, existing field studies conducted after the year 2000 are reviewed and summarized in terms of geographical, interannual and seasonal distributions. Annual PM 2.5 was up to 6 times the National Ambient Air Quality Standards (NAAQS) in some megacities in northern China. Annual PM 2.5 was higher in northern than southern cities, and higher in inland than coastal cities. In a few cities with data longer than a decade, PM 2.5 showed a slight decrease only in the second half of the past decade, while carbonaceous aerosols decreased, sulfate (SO 2− 4 ) and ammonium (NH + 4 ) remained at high levels, and nitrate (NO − 3 ) increased. The highest seasonal averages of PM 2.5 and its major chemical components were typically observed in the cold seasons. Annual average contributions of secondary inorganic aerosols to PM 2.5 ranged from 25 to 48 %, and those of carbonaceous aerosols ranged from 23 to 47 %, both with higher contributions in southern regions due to the frequent dust events in northern China. Source apportionment analysis identified secondary inorganic aerosols, coal combustion and traffic emission as the top three source factors contributing to PM 2.5 mass in most Chinese cities, and the sum of these three source factors explained 44 to 82 % of PM 2.5 mass on annual average across China. Biomass emission in most cities, industrial emission in industrial cities, dust emission in northern cities and ship emission in coastal cities are other major source factors, each of which contributed 7-27 % to PM 2.5 mass in applicable cities.The geographical pattern of scattering coefficient (b sp ) was similar to that of PM 2.5 , and that of aerosol absorption coefficient (b ap ) was determined by elemental carbon (EC) mass concentration and its coating. b sp in ambient condition of relative humidity (RH) = 80 % can be amplified by about 1.8 times that under dry conditions. Secondary inorganic aerosols accounted for about 60 % of aerosol extinction coefficient (b ext ) at RH greater than 70 %. The mass scattering efficiency (MSE) of PM 2.5 ranged from 3.0 to 5.0 m 2 g −1 for aerosols produced from anthropogenic emissions and from 0.7 to 1.0 m 2 g −1 for natural dust aerosols. The mass absorption efficiency (MAE) of EC ranged from 6.5 to 12.4 m 2 g −1 in urban environments, but the MAE of water-soluble organic carbon was only 0.05 to 0.11 m 2 g −1 . Historical emission control policies in China and their effectiveness were discussed based on available chemically resolved PM 2.5 data, which provides the much needed knowledge for guiding future studies and emissions policies.

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Section: The Pearl River Delta Region Interannual Variations In Guangmentioning

confidence: 99%

A review of current knowledge concerning PM2. 5 chemical composition, aerosol optical properties and their relationships across China

et al. 2017

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“…MM5-STEM 2K3 is an integrated model system which combines the Sulfur Transport and Deposition Model version 2K3 (STEM-2K3) and the Penn State/National Center for Atmospheric Research (NCAR) Fifth-Generation Mesoscale Meteorological Model version 3.7 (MM5v3.7). It includes the SAPRC99 gaseous mechanism (Carter, 2000) with photolysis rates calculated using the online TUV model (Madronich and Flocke, 1999). It was used in the Transport and Chemical Evolution over the Pacific (TRACE-P) experiment Carmichael et al, 2003) and performed well compared with observed data in the PRD region (X.…”

Section: Air Quality Models and Model Evaluationmentioning

confidence: 99%

“…Without systematic evaluations based on complex tools, it is neither possible to understand how the air quality will respond to the reduction measures nor to make a scientific strategy on air quality improvement Ponche and Vinuesa, 2005; Y. Karatzas et al, 2003;Zheng et al,2009b;Lu et al, 2013). Unfortunately, the technical capability for local environmental bureaus is still not sufficient to do so.…”

Section: Introductionmentioning

confidence: 99%

Feasibility and difficulties of China's new air quality standard compliance: PRD case of PM2.5 and ozone from 2010 to 2025

et al. 2013

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Abstract.Improving the air quality in China is a long and arduous task. Although China has made very aggressive plans for air pollutant control, the difficulties in achieving the new air quality goals are still significant. A lot of cities are developing their implementation plan (CIP) for new air quality goals. In this study, a southern city, Guangzhou, has been selected to analyze the feasibility and difficulties of new air quality standard compliance, as well as the CIP evaluation. A comprehensive study of the air quality status in Guangzhou and the surrounding area was conducted using 22 monitoring sites collection data for O 3 , PM 2.5 and PM 10 . The monthly non-attainment rates for O 3 vary from 7 to 25 % for May to November. The city average PM 2.5 concentration was 53 µg m −3 in Guangzhou in 2010, which needs to be reduced by at least 34 % to achieve the target of 35 µg m −3 . The PM 2.5 high violation months are from November to March. A CIP was developed for Guangzhou, which focused on PM 2.5 . Based on the CIP, the emission amounts of NO x , PM 10 , PM 2.5 and volatile organic compounds (VOCs) in 2025 would be controlled to 119, 61, 26 and 163 thousand tons, respectively, reduced by 51.9 %, 55.9 %, 61.8 % and 41.3 %, respectively, compared to 2010. Analysis of air quality using the model MM5-STEM suggests that the long-term control measures would achieve the PM 2.5 and PM 10 goals successfully by 2025. The PM 2.5 annual average concentration would be reduced to 27 µg m −3 in 2025. However, such PM 2.5 -based emission control scenarios may enhance the ozone pollution problems. The O 3 non-attainment rate would increase from 7.1 % in 2010 to 12.9 % in 2025, implying that ozone will likely become a major compliance issue with the new national ambient air quality standards (NAAQS). This suggests that O 3 control must be taken into account while designing PM 2.5 control strategies, especially PM 2.5 compliance under increased atmospheric oxidation, and for VOCs / NO x reduction ratios need to be further investigated, in order to eventually achieve O 3 -PM 2.5 co-improvement in this region or other cities.

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“…Following the approach of Tian Hezhong(2001) [5] and Qing Lu(2013) [6] NOx emission source were classified into seven categories: power plants and heating, industry, construction, transportation, commercial, residential consumption and other resources. Ten fuel types such as coal, coke, crude oil etc, are considered and their emission factors are different for different period.…”

Section: Methodsmentioning

confidence: 99%

Estimation of NO_xEmission from Fossil Fuel Consumption in China for the Period 1980-2012

Sun

2016

MATEC Web of Conferences

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Abstract.As the largest consumer of fossil fuel, China NOx emission from energy consumption has become a hotspot for studies. In this study, emission inventory was used to analysis the historical variation of NOx emission in china for the period 1980 to 2012. Results indicate that NOx mission of China has increased from 446.45 104t to 2499.72 104t during 1980-2012, electricity, industry and transportation was the main contributor and NOx emission has increased from 145.04 104t, 206.75 104t, 39.44 104t to 1311.6 104t, 479.46 104t, 576.31 104t respectively; from the spatial pattern, high total NOx emission with mainly concentrated in the north of China and the high emission intensity mainly concentrate in eastern China.

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Emission trends and source characteristics of SO2, NOx, PM10 and VOCs in the Pearl River Delta region from 2000 to 2009

Cited by 108 publications

References 19 publications

A review of current knowledge concerning PM<sub>2. 5</sub> chemical composition, aerosol optical properties and their relationships across China

A review of current knowledge concerning PM<sub>2. 5</sub> chemical composition, aerosol optical properties and their relationships across China

Feasibility and difficulties of China's new air quality standard compliance: PRD case of PM<sub>2.5</sub> and ozone from 2010 to 2025

Estimation of NO_xEmission from Fossil Fuel Consumption in China for the Period 1980-2012

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Emission trends and source characteristics of SO2, NOx, PM10 and VOCs in the Pearl River Delta region from 2000 to 2009

Cited by 108 publications

References 19 publications

A review of current knowledge concerning PM&lt;sub&gt;2. 5&lt;/sub&gt; chemical composition, aerosol optical properties and their relationships across China

A review of current knowledge concerning PM&lt;sub&gt;2. 5&lt;/sub&gt; chemical composition, aerosol optical properties and their relationships across China

Feasibility and difficulties of China's new air quality standard compliance: PRD case of PM&lt;sub&gt;2.5&lt;/sub&gt; and ozone from 2010 to 2025

Estimation of NOxEmission from Fossil Fuel Consumption in China for the Period 1980-2012

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A review of current knowledge concerning PM<sub>2. 5</sub> chemical composition, aerosol optical properties and their relationships across China

A review of current knowledge concerning PM<sub>2. 5</sub> chemical composition, aerosol optical properties and their relationships across China

Feasibility and difficulties of China's new air quality standard compliance: PRD case of PM<sub>2.5</sub> and ozone from 2010 to 2025

Estimation of NO_xEmission from Fossil Fuel Consumption in China for the Period 1980-2012