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- W2059356768 abstract "Concentrations of atmospheric PM10 and chemical components (including twenty-one elements, nine ions, organic carbon (OC) and elemental carbon (EC)) were measured at five sites in a heavily industrial region of Shenzhen, China in 2005. Results showed that PM10 concentrations exhibited the highest values at 264 μg/m3 at the site near a harbor with the influence of harbor activities. Sulfur exhibited the highest concentrations (from 2419 to 3995 ng/m3) of all the studied elements, which may be related to the influence of coal used as fuel in this area for industrial plants. This was verified by the high mass percentages of SO2−4, which accounted for 34.3%–39.7% of the total ions. NO−3/SO2−4 ratios varied from 0.64–0.71, which implies coal combustion was predominant compared with vehicle emission. The anion/cation ratios range was close to 0.95, indicating anion deficiency in this region. The harbor site showed the highest OC and EC concentrations, with the influence of emission from vessels. Secondary organic carbon accounted for about 22.6%–38.7% of OC, with the highest percentage occurring at the site adjacent to a coal-fired power plant and wood plant. The mass closure model performed well in this heavily industrial region, with significant correlation obtained between chemically determined and gravimetrically measured PM10 mass. The main constituents of PM10 were found to be organic materials (30.9%–69.5%), followed by secondary inorganic aerosol (7.9%–25.0%), crustal materials (6.7%–13.8%), elemental carbon (3.5%–10.8%), sea salt (2.4%–6.2%) and trace elements (2.0%–4.9%) in this heavily industrialized region. Principal component analysis indicated that the main sources for particulate matter in this industrial region were crustal materials and coal/wood combustion, oil combustion, secondary aerosols, industrial processes and vehicle emission." @default.
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- W2059356768 date "2013-08-01" @default.
- W2059356768 modified "2023-09-29" @default.
- W2059356768 title "Chemical composition, mass closure and sources of atmospheric PM10 from industrial sites in Shenzhen, China" @default.
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- W2059356768 doi "https://doi.org/10.1016/s1001-0742(12)60238-1" @default.
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