| Title: | "Mass Concentration, Source and Health Risk Assessment of Volatile Organic Compounds in Nine Cities of Northeast China" |
| Author(s): | Shi J; Bao Y; Ren L; Chen Y; Bai Z; Han X; |
| Address: | "Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China. National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries, Kunming 650500, China. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China" |
| Journal Title: | Int J Environ Res Public Health |
| ISSN/ISBN: | 1660-4601 (Electronic) 1661-7827 (Print) 1660-4601 (Linking) |
| Abstract: | "From April 2008 to July 2009, ambient measurements of 58 volatile organic compounds (VOCs), including alkanes, alkenes, and aromatics, were conducted in nine industrial cities (Shenyang, Fushun, Changchun, Jilin, Harbin, Daqing, Huludao, Anshan and Tianjin) of the Northeast Region, China (NRC). Daqing had the highest concentration of VOCs (519.68 +/- 309.88 mug/m3), followed by Changchun (345.01 +/- 170.52 mug/m3), Harbin (231.14 +/- 46.69 mug/m3), Jilin (221.63 +/- 34.32 mug/m3), Huludao (195.92 +/- 103.26 mug/m3), Fushun (135.43 +/- 46.01 mug/m3), Anshan (109.68 +/- 23.27 mug/m3), Tianjin (104.31 +/- 46.04 mug/m3), Shenyang (75.2 +/- 40.09 mug/m3). Alkanes constituted the largest percentage (>40%) in concentrations of the quantified VOCs in NRC, and the exception was Tianjin dominated by aromatics (about 52.34%). Although alkanes were the most abundant VOCs at the cities, the most important VOCs contributing to ozone formation potential (OFP) were alkenes and aromatics. Changchun had the highest OFP (537.3 mug/m3), Tianjin had the lowest OFP (111.7 mug/m3). The main active species contributing to OFP in the nine cities were C2~C6 alkanes, C7~C8 aromatic hydrocarbons, individual cities (Daqing) contained n-hexane, propane and other alkane species. Correlation between individual hydrocarbons, B/T ratio and principal component analysis model (PCA) were deployed to explore the source contributions. The results showed that the source of vehicle exhausts was one of the primary sources of VOCs in all nine cities. Additionally, individual cities, such as Daqing, petrochemical industry was founded to be an important source of VOCs. The results gained from this study provided a large of useful information for better understanding the characteristics and sources of ambient VOCs incities of NRC. The non-carcinogenic risk values of the nine cities were within the safe range recognized by the U.S. Environmental Protection Agency (HQ < 1), and the lifetime carcinogenic risk values of benzene were 3.82 x 10-5~1.28 x 10-4, which were higher than the safety range specified by the US Environmental Protection Agency (R < 1.00 x 10-6). The results of risk values indicated that there was a risk of cancer in these cities" |
| Keywords: | *Air Pollutants/analysis Alkanes Alkenes/analysis China Cities Environmental Monitoring/methods *Ozone/analysis Risk Assessment *Volatile Organic Compounds/analysis VOCs health risk ozone formation potential principal component analysis source apportionme; |
| Notes: | "MedlineShi, Jianwu Bao, Yuzhai Ren, Liang Chen, Yuanqi Bai, Zhipeng Han, Xinyu eng Research Support, Non-U.S. Gov't Switzerland 2022/04/24 Int J Environ Res Public Health. 2022 Apr 18; 19(8):4915. doi: 10.3390/ijerph19084915" |
