| Title: | Explication on distribution patterns of volatile organic compounds in petro-chemistry and oil refineries of China using a species-transport model and health risk assessment |
| Author(s): | Zhang T; Kang W; Ge X; Lin Q; Chen Q; Yu Y; An T; |
| Address: | "College of Civil Engineering, Liaoning Technical University, Fuxin 123000, PR China. Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, PR China. Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, PR China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Key Laboratory of City Cluster Environmental Safety and Green Development, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China. Electronic address: yuyingxin@gdut.edu.cn" |
| DOI: | 10.1016/j.scitotenv.2022.160707 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) from industrial emissions have attracted great attention due to their negative effects on human, but there is lack of deterministic air quality model for VOC emissions. In this study, airborne VOCs from a typical petrochemical and oil refinery region, Lanzhou, Gansu province of China, were on-site measured. The regional pollution patterns were investigated using a species transport model and the health risks were evaluated. The spatial distribution of VOCs showed that 87.5 % of the airborne VOCs were benzene, toluene, ethylbenzene, and xylene having higher concentration (146 mug/m(3)) in the north direction oil refinery industrial areas. The concentrations of toluene and benzene were as high as 41.5 and 33.3 mug/m(3) in the 4 km(2) area away from the petrochemical emission source, respectively, and the concentration of o-/m + p-xylene was up to 79.7 mug/m(3). Based on the measured concentration data, the numerical results showed that the accumulation of high concentration of VOC species by mass transfer in the region is related to the atmospheric diffusion driven by downward-moving air over the valley areas. Non-carcinogenic risk assessments showed that airborne benzene exposure had acceptable hazard quotient of 0.185 for adults, which was 1.8 times of children's (0.102), whereas it was found that a high carcinogenic risk (>10(-4)) from benzene in several sampling sites and diffuse distance become significant for carcinogenic risk. This study verified the effectiveness of VOC atmospheric diffusion model through a large number of on-site monitoring data, providing data support for model-based risk assessment" |
| Keywords: | Adult Child Humans *Volatile Organic Compounds/analysis Benzene/analysis *Air Pollutants/analysis Environmental Monitoring/methods Toluene/analysis Risk Assessment China Oil and Gas Industry Btex Emission reduction Industry park Regional transport Spatial; |
| Notes: | "MedlineZhang, Ting Kang, Wei Ge, Xiang Lin, Qinhao Chen, Qiang Yu, Yingxin An, Taicheng eng Netherlands 2022/12/10 Sci Total Environ. 2023 Mar 10; 863:160707. doi: 10.1016/j.scitotenv.2022.160707. Epub 2022 Dec 6" |
