| Title: | Characteristics of volatile organic compounds and secondary organic aerosol pollution in different functional areas of petrochemical industrial cities in Northwest China |
| Author(s): | Yang Y; Guo W; Sun J; Chen Q; Meng X; Wang L; Tao H; Yang L; |
| Address: | "Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China; Northwest Institute of Eco-environmental Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Gansu Environmental Monitoring Centre, Lanzhou 730000, China. Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China; College of Science, Northwest A&F University, Yangling 712100, China. Electronic address: guowk17@1zu.edu.cn. Gansu Environmental Monitoring Centre, Lanzhou 730000, China. Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China. Northwest Institute of Eco-environmental Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China. Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China; Gansu Environmental Monitoring Centre, Lanzhou 730000, China" |
| DOI: | 10.1016/j.scitotenv.2022.159903 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "The aim of this study was to better understand the characteristics of volatile organic compounds (VOCs) and secondary organic aerosol (SOA) pollution in different functional areas of petrochemical industrial cities. In Lanzhou, a typical petrochemical industrial city in Northwest China, with the use of an Integrated Atmospheric Mobile Monitoring Vehicle (IAMMV), various real-time online monitoring instruments, including a VOC monitoring instrument (TH-300B) and single-particle aerosol mass spectrometer (SPAMS), were used in combination. These instruments were employed to determine PM(2.5), VOCs and other factors at monitoring sites in Xigu (XG) and Chengguan (CG) districts in September 2020 and 2021, respectively. The results revealed that during the monitoring period, the average VOC concentrations at the XG and CG monitoring sites were 102.3 and 35.8 ppb, respectively. Benzene (45.58 %) and toluene (24.47 %) significantly contributed to the SOA formation potential at the XG site. M/P-xylene (27.88 %) and toluene (23.64 %) more notably contributed to the SOA formation potential at the CG site. The PM(2.5) mass concentration at the XG site (24.1 mug.m(-3)) was similar to that at the CG site (21.2 mug.m(-3)), but the proportion of particulate matter components greatly differed. The proportion of organic carbon (OC) at the XG site (19.00 %) was higher than that at the CG site (9.97 %). The number of particles containing C(2)H(3)O(+) (m/z = 43) accounted for 36.96 % and 15.41 % of the total particles at the XG and CG sites, respectively. The mixing ratios of OC and hybrid carbon (OCEC) with C(2)H(3)O(+) (m/z = 43) were 0.81 and 0.53, respectively, at the XG site and reached only 0.48 and 0.25, respectively, at the CG site. The secondary ageing degree of particles in XG district was high. These results could provide a reference for ambient air quality improvement and the formulation of governance measures in different functional areas of petrochemical industrial cities" |
| Keywords: | *Volatile Organic Compounds Cities China Toluene Carbon Mixing state Petrochemical industry Soa Single-particle aerosol mass spectrometer (SPAMS) Volatile organic compounds (VOCs); |
| Notes: | "MedlineYang, Yanping Guo, Wenkai Sun, Jian Chen, Qiang Meng, Xianhong Wang, Lina Tao, Huijie Yang, Lili eng Netherlands 2022/11/06 Sci Total Environ. 2023 Feb 1; 858(Pt 3):159903. doi: 10.1016/j.scitotenv.2022.159903. Epub 2022 Nov 2" |
