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- W4297924427 abstract "To elucidate the variations in mass concentrations of organic carbon (OC) and black carbon (BC) in PM2.5 and their light absorption characteristics in Lanzhou, we conducted one-year online measurements by using a newly developed total carbon analyzer (TCA08) coupled with an aethalometer (AE33) from July 2018 to July 2019. The mean OC and BC concentrations were 6.4 ± 4.4 and 2.0 ± 1.3 µg/m3, respectively. Clear seasonal variations were observed for both components, with winter having the highest concentrations, followed by autumn, spring, and summer. The diurnal variations of OC and BC concentrations were similar throughout the year, with daily two peaks occurring in the morning and evening, respectively. A relatively low OC/BC ratio (3.3 ± 1.2, n = 345) were observed, indicating that fossil fuel combustion was the primary source of the carbonaceous components. This is further substantiated by relatively low biomass burning contribution (fbiomass: 27.1% ± 11.3%) to BC using aethalometer based measurement though fbiomass value which increased significantly in winter (41.6% ± 5.7%). We estimated a considerable brown carbon (BrC) contribution to the total absorption coefficient (babs) at 370 nm (yearly average of 30.8% ± 11.1%), with a winter maximum of 44.2% ± 4.1% and a summer minimum of 19.2% ± 4.2%. Calculation of the wavelength dependence of total babs revealed an annual mean AAE370-520 value of 4.2 ± 0.5, with slightly higher values in spring and winter. The mass absorption cross-section of BrC also exhibited higher values in winter, with an annual mean of 5.4 ± 1.9 m2/g, reflecting the impact of emissions from increased biomass burning on BrC concentrations." @default.
- W4297924427 created "2022-10-01" @default.
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- W4297924427 date "2023-09-01" @default.
- W4297924427 modified "2023-10-16" @default.
- W4297924427 title "Concentrations and light absorption properties of PM2.5 organic and black carbon based on online measurements in Lanzhou, China" @default.
- W4297924427 cites W1484899920 @default.
- W4297924427 cites W1515324773 @default.
- W4297924427 cites W1549518695 @default.
- W4297924427 cites W1859320757 @default.
- W4297924427 cites W1907369419 @default.
- W4297924427 cites W1917544421 @default.
- W4297924427 cites W1970595184 @default.
- W4297924427 cites W1977992740 @default.
- W4297924427 cites W1978124111 @default.
- W4297924427 cites W1979710475 @default.
- W4297924427 cites W1981601702 @default.
- W4297924427 cites W1985965824 @default.
- W4297924427 cites W2000798680 @default.
- W4297924427 cites W2001059180 @default.
- W4297924427 cites W2003869079 @default.
- W4297924427 cites W2036074422 @default.
- W4297924427 cites W2037490486 @default.
- W4297924427 cites W2043437215 @default.
- W4297924427 cites W2052532904 @default.
- W4297924427 cites W2060117860 @default.
- W4297924427 cites W2062684589 @default.
- W4297924427 cites W2085884799 @default.
- W4297924427 cites W2086929633 @default.
- W4297924427 cites W2091945094 @default.
- W4297924427 cites W2092365624 @default.
- W4297924427 cites W2096146004 @default.
- W4297924427 cites W2098599168 @default.
- W4297924427 cites W2099852381 @default.
- W4297924427 cites W2100907719 @default.
- W4297924427 cites W2104417831 @default.
- W4297924427 cites W2106161186 @default.
- W4297924427 cites W2106163623 @default.
- W4297924427 cites W2107613095 @default.
- W4297924427 cites W2114826007 @default.
- W4297924427 cites W2128144672 @default.
- W4297924427 cites W2132436820 @default.
- W4297924427 cites W2136753478 @default.
- W4297924427 cites W2138548111 @default.
- W4297924427 cites W2141970008 @default.
- W4297924427 cites W2150009788 @default.
- W4297924427 cites W2152579458 @default.
- W4297924427 cites W2155308373 @default.
- W4297924427 cites W2162214076 @default.
- W4297924427 cites W2195344725 @default.
- W4297924427 cites W2229442445 @default.
- W4297924427 cites W2238529273 @default.
- W4297924427 cites W2262273898 @default.
- W4297924427 cites W2330080417 @default.
- W4297924427 cites W2509721764 @default.
- W4297924427 cites W2510808502 @default.
- W4297924427 cites W2513572388 @default.
- W4297924427 cites W2515948955 @default.
- W4297924427 cites W2517980468 @default.
- W4297924427 cites W2550752903 @default.
- W4297924427 cites W2556149400 @default.
- W4297924427 cites W2569006493 @default.
- W4297924427 cites W2610196077 @default.
- W4297924427 cites W2613465674 @default.
- W4297924427 cites W2613658816 @default.
- W4297924427 cites W2615868133 @default.
- W4297924427 cites W2621529304 @default.
- W4297924427 cites W2733705861 @default.
- W4297924427 cites W2763809689 @default.
- W4297924427 cites W2768101880 @default.
- W4297924427 cites W2791748897 @default.
- W4297924427 cites W2796071363 @default.
- W4297924427 cites W2800117066 @default.
- W4297924427 cites W2800318251 @default.
- W4297924427 cites W2809706816 @default.
- W4297924427 cites W2810076399 @default.
- W4297924427 cites W2883288412 @default.
- W4297924427 cites W2887669119 @default.
- W4297924427 cites W2888158062 @default.
- W4297924427 cites W2892167584 @default.
- W4297924427 cites W2902190216 @default.
- W4297924427 cites W2909203146 @default.
- W4297924427 cites W2914156409 @default.
- W4297924427 cites W2914629899 @default.
- W4297924427 cites W2920999683 @default.
- W4297924427 cites W2922266264 @default.
- W4297924427 cites W2956027837 @default.
- W4297924427 cites W2965004811 @default.
- W4297924427 cites W2973836103 @default.
- W4297924427 cites W2975272928 @default.