ACPD Atmospheric Chemistry and Physics Discussions ACPD 1680-7375 Copernicus GmbH Göttingen, Germany 10.5194/acpd-11-951-2011 The study of emission inventory on anthropogenic air pollutants and VOC species in the Yangtze River Delta region, China Huang C. 1 Chen C. H. 1 Li L. 1 Cheng Z. 2 Wang H. L. 1 Huang H. Y. 1 Streets D. G. 3 Wang Y. J. 4 Shanghai Academy of Environmental Sciences, Shanghai 200233, China Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China Argonne National Laboratory, Argonne, Illinois 60439, USA School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China 14 01 2011 11 1 951 983 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys-discuss.net/11/951/2011/acpd-11-951-2011.html The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/11/951/2011/acpd-11-951-2011.pdf

The purpose of this study is to develop an emission inventory for major anthropogenic air pollutants and VOC species in the Yangtze River Delta (YRD) region for the year 2007. A "bottom-up" methodology was adopted to compile the inventory based on major emission sources in the sixteen cities of this region. Results show that the emissions of SO<sub>2</sub>, NO<sub>x</sub>, CO, PM<sub>10</sub>, PM<sub>2.5</sub>, VOCs, and NH<sub>3</sub> in the YRD region for the year 2007 are 2391.8 kt, 2292.9 kt, 6697.1 kt, 3115.7 kt, 1510.8 kt, 2767.4 kt, and 458.9 kt, respectively. Ethylene, mp-xylene, o-xylene, toluene, and 1,2,4-trimethylbenzene, 2,4-dimethylpentane, ethyl benzene, propylene, 1-pentene, and isoprene are the key species contributing 77% to the total OFPs. The spatial distribution of the emissions shows the emissions and OFPs are mainly concentrated in the urban and industrial areas along the Yangtze River and around the Hangzhou Bay. The industrial sources including power plant, other fuel combustion facilities, and non-combustion processes contribute about 97%, 86%, 89%, 91%, and 69% of the total SO<sub>2</sub>, NO<sub>x</sub>, PM<sub>10</sub>, PM<sub>2.5</sub>, and VOC emissions. Vehicles take up 12.3% and 12.4% of the NO<sub>x</sub> and VOC emissions, respectively. Regarding OFPs, chemical industry, domestic use of paint and printing, and gasoline vehicle contribute 38.2%, 23.9%, and 11.6% to the ozone formation in the YRD region.

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