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- W2972094780 abstract "The sulfur and oxygen isotopic compositions of sulfate in PM2.5 were determined by EA-IRMS to study the sulfur sources and oxidation formation pathways of sulfates in PM2.5 from Nanjing northern suburbs during July 2014. The results indicated that δ34 S values of sulfate ranged from 1.7‰ to 4.8‰ with an average of 3.2‰±1.0‰, while δ18O values ranged from 7.5‰ to 12.9‰ with an average of 9.3‰±1.7‰. Comparing the δ34 S values of aerosol sulfate and potential pollution sources, we concluded that the sulfur source of PM2.5 was mainly local coal combustion and vehicle exhaust. In addition, the secondary sulfate was dominant in PM2.5, and 59.3% of the formation of the secondary sulfate was caused by SO2 homogeneous oxidation. In addition, the heterogeneous oxidation of SO2 in the atmosphere was dominated by ferrous iron oxidation in excess O2. The main mechanisms of homogeneous oxidation include oxidation in the presence of electric discharge (presumably forming O3) and NO2." @default.
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- W2972094780 date "2018-05-08" @default.
- W2972094780 modified "2023-09-23" @default.
- W2972094780 title "[Sulfur Sources and Oxidation Pathways in Summer Aerosols from Nanjing Northern Suburbs Using S and O Isotopes]." @default.
- W2972094780 doi "https://doi.org/10.13227/j.hjkx.201709111" @default.
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