Matches in SemOpenAlex for { <https://semopenalex.org/work/W3088475877> ?p ?o ?g. }
- W3088475877 endingPage "1796" @default.
- W3088475877 startingPage "1775" @default.
- W3088475877 abstract "Abstract. Water-soluble organic carbon (WSOC) accounts for a large proportion of aerosols and plays a critical role in various atmospheric chemical processes. In order to investigate the primary sources and secondary production of WSOC in downtown Beijing, day and night fine particulate matter (PM2.5) samples in January (winter), April (spring), July (summer) and October (autumn) 2017 were collected and analyzed for WSOC and organic tracers in this study. WSOC was dominated by its moderately hydrophilic fraction and showed the highest concentration in January and comparable levels in April, July and October 2017. Some typical organic tracers were chosen to evaluate the emission strength and secondary formation of WSOC. Seasonal variation of the organic tracers suggested significantly enhanced formation of anthropogenic secondary organic aerosols (SOAs) during the sampling period in winter and obviously elevated biogenic SOA formation during the sampling period in summer. These organic tracers were applied into a positive matrix factorization (PMF) model to calculate the source contributions of WSOC as well as its moderately and strongly hydrophilic portions. The secondary sources contributed more than 50 % to WSOC, with higher contributions during the sampling periods in summer (75.1 %) and winter (67.4 %), and the largest contributor was aromatic SOC. In addition, source apportionment results under different pollution levels suggested that controlling biomass burning and aromatic precursors would be effective to reduce WSOC during the haze episodes in cold seasons. The impact factors for the formation of different SOA tracers and total secondary organic carbon (SOC) as well as moderately and strongly hydrophilic SOC were also investigated. The acid-catalyzed heterogeneous or aqueous-phase oxidation appeared to dominate in the SOC formation during the sampling period in winter, while the photochemical oxidation played a more critical role during the sampling period in summer. Moreover, photooxidation played a more critical role in the formation of moderately hydrophilic SOC, while the heterogeneous or aqueous-phase reactions had more vital effects on the formation of strongly hydrophilic SOC." @default.
- W3088475877 created "2020-10-01" @default.
- W3088475877 creator A5019566401 @default.
- W3088475877 creator A5020529794 @default.
- W3088475877 creator A5024546282 @default.
- W3088475877 creator A5033560808 @default.
- W3088475877 creator A5048379858 @default.
- W3088475877 creator A5073113793 @default.
- W3088475877 creator A5079011491 @default.
- W3088475877 creator A5086553638 @default.
- W3088475877 date "2021-02-09" @default.
- W3088475877 modified "2023-10-12" @default.
- W3088475877 title "Characteristics, primary sources and secondary formation of water-soluble organic aerosols in downtown Beijing" @default.
- W3088475877 cites W1546716564 @default.
- W3088475877 cites W1915896780 @default.
- W3088475877 cites W1930529906 @default.
- W3088475877 cites W1966779205 @default.
- W3088475877 cites W1974430896 @default.
- W3088475877 cites W1974703729 @default.
- W3088475877 cites W1980245626 @default.
- W3088475877 cites W1981445057 @default.
- W3088475877 cites W1983580611 @default.
- W3088475877 cites W1988963778 @default.
- W3088475877 cites W2002553150 @default.
- W3088475877 cites W2004633517 @default.
- W3088475877 cites W2006980073 @default.
- W3088475877 cites W2013918335 @default.
- W3088475877 cites W2015349974 @default.
- W3088475877 cites W2015948190 @default.
- W3088475877 cites W2017530241 @default.
- W3088475877 cites W2017959016 @default.
- W3088475877 cites W2026802068 @default.
- W3088475877 cites W2029604856 @default.
- W3088475877 cites W2040113717 @default.
- W3088475877 cites W2041028539 @default.
- W3088475877 cites W2048943000 @default.
- W3088475877 cites W2062311963 @default.
- W3088475877 cites W2065356747 @default.
- W3088475877 cites W2067732080 @default.
- W3088475877 cites W2068577259 @default.
- W3088475877 cites W2079702179 @default.
- W3088475877 cites W2080855977 @default.
- W3088475877 cites W2092365624 @default.
- W3088475877 cites W2094440342 @default.
- W3088475877 cites W2096804035 @default.
- W3088475877 cites W2104952727 @default.
- W3088475877 cites W2111212225 @default.
- W3088475877 cites W2111369201 @default.
- W3088475877 cites W2111813284 @default.
- W3088475877 cites W2122054302 @default.
- W3088475877 cites W2122574093 @default.
- W3088475877 cites W2129456881 @default.
- W3088475877 cites W2130042267 @default.
- W3088475877 cites W2130969229 @default.
- W3088475877 cites W2132436820 @default.
- W3088475877 cites W2138239367 @default.
- W3088475877 cites W2143934067 @default.
- W3088475877 cites W2144923407 @default.
- W3088475877 cites W2151277392 @default.
- W3088475877 cites W2152811544 @default.
- W3088475877 cites W2156432006 @default.
- W3088475877 cites W2166063496 @default.
- W3088475877 cites W2166133047 @default.
- W3088475877 cites W2172141385 @default.
- W3088475877 cites W2176796503 @default.
- W3088475877 cites W2177876847 @default.
- W3088475877 cites W2179865377 @default.
- W3088475877 cites W2325021767 @default.
- W3088475877 cites W2329224534 @default.
- W3088475877 cites W2332804823 @default.
- W3088475877 cites W2334063822 @default.
- W3088475877 cites W2344147658 @default.
- W3088475877 cites W2398433293 @default.
- W3088475877 cites W2404916334 @default.
- W3088475877 cites W2461291864 @default.
- W3088475877 cites W2461331636 @default.
- W3088475877 cites W2462743129 @default.
- W3088475877 cites W2473368837 @default.
- W3088475877 cites W2510035184 @default.
- W3088475877 cites W255540518 @default.
- W3088475877 cites W2564015495 @default.
- W3088475877 cites W2566760819 @default.
- W3088475877 cites W2567098959 @default.
- W3088475877 cites W2586996476 @default.
- W3088475877 cites W2588290858 @default.
- W3088475877 cites W2622194181 @default.
- W3088475877 cites W2738293141 @default.
- W3088475877 cites W2765639479 @default.
- W3088475877 cites W2767399561 @default.
- W3088475877 cites W2771886759 @default.
- W3088475877 cites W2772607556 @default.
- W3088475877 cites W2775203830 @default.
- W3088475877 cites W2781878852 @default.
- W3088475877 cites W2782092780 @default.
- W3088475877 cites W2782099617 @default.
- W3088475877 cites W2784753779 @default.
- W3088475877 cites W2789822349 @default.
- W3088475877 cites W2791162704 @default.