ACP Atmospheric Chemistry and Physics ACP 1680-7324 Copernicus GmbH Göttingen, Germany 10.5194/acp-11-4105-2011 Emission inventory of 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 Zhang G. F. 1 Chen Y. R. 1 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 04 05 2011 11 9 4105 4120 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.net/11/4105/2011/acp-11-4105-2011.html The full text article is available as a PDF file from http://www.atmos-chem-phys.net/11/4105/2011/acp-11-4105-2011.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 2392 kt, 2293 kt, 6697 kt, 3116 kt, 1511 kt, 2767 kt, and 459 kt, respectively. Ethylene, mp-xylene, o-xylene, toluene, 1,2,4-trimethylbenzene, 2,4-dimethylpentane, ethyl benzene, propylene, 1-pentene, and isoprene are the key species contributing 77 % to the total ozone formation potential (OFP). 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 Hangzhou Bay. The industrial sources, including power plants 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, the chemical industry, domestic use of paint & printing, and gasoline vehicles contribute 38 %, 24 %, and 12 % to the ozone formation in the YRD region.

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