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Title: | Source apportionment of VOCs and their impacts on surface ozone in an industry city of Baoji, Northwestern China | Authors: | Xue, YG Ho, SSH Huang, Y Li, BW Wang, LQ Dai, WT Cao, JJ Lee, SC |
Issue Date: | 2017 | Source: | Scientific reports, 30 2017, v. 7, no. , 9979, p. 1-12 | Abstract: | Level of surface ozone (O-3) has been increasing continuously in China in recent years, while its contributors and formation pathways are less understood. In this study, distributions of volatile organic compounds (VOCs) and the roles on O-3 pollution have been investigated in a typical industrial city of Baoji in Northwestern China by means of monitoring of their concentrations and other trace gases. The air samples have been collected at three sites according to urban function area. Concentration of VOCs in Weibin site, which near to industrial zone, was higher than most of other cities in China, and the ambient VOCs were dominated by aromatics and alkenes. The temporal variations of VOCs and O-3 coincided with the surface wind, implying that the formation of O-3 was impacted by both exports of plumes upwind and local photochemical reactions. Result of source apportionment indicated that industrial emission, vehicular exhaust, and solvent evaporation were three major pollution origins. Alkenes and aromatics contributed to the largest fractions of photochemical reactivity, suggesting the strong influences from industrial and traffic sectors. The study presents the characteristic VOCs and other factors in the contribution of O-3 formation in China. | Publisher: | Nature Publishing Group | Journal: | Scientific reports | ISSN: | 2045-2322 | EISSN: | 2045-2322 | DOI: | 10.1038/s41598-017-10631-4 | Rights: | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2017 The following publication Xue, Y., Ho, S.S.H., Huang, Y. et al. Source apportionment of VOCs and their impacts on surface ozone in an industry city of Baoji, Northwestern China. Sci Rep 7, 9979 (2017) is available at https://dx.doi.org/10.1038/s41598-017-10631-4 |
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