Matches in SemOpenAlex for { <https://semopenalex.org/work/W2024893247> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W2024893247 abstract "Abstract Multiple, essentially identical samples of PM2.5, PM10 and TSP aerosol matter were collected on filters of cellulose acetate-nitrate membrane (CA), quartz fiber (QF) and glass fiber (GF) material. The samples were analyzed in terms of the gravimetric mass and the mass of nine inorganic ions. These parameters were also measured after step-wise thermodesorption of aerosol matter by 1-h heating in ambient air up to 350 °C. The observed thermograms of the analyzed ions were compared with results obtained using pure and mixed salts on filter. In summer the apparent mass concentration of aerosol matter collected on CA was always larger than on QF and GF filter. The excess mass on CA was found to be highly volatile, i.e. completely removable at 120 °C, and composed of both ionic and non-ionic matter. The apparent nitrate concentration sampled on QF and GF was almost an order of magnitude lower than on CA. The very pronounced nitrate losses from the fiber filters are attributed to volatilization of ammonium nitrate. In contrast, nitrate losses from CA were small or even negligible for two reasons, pile-up of aerosol matter predominantly on (rather than in ) the filter (“cake” formation) and, more importantly, re-adsorption of volatilized ammonia and nitric acid in the filter. Sampling on GF filters was found to suffer from severe problems due to chemical reactions between Na + of the glass and SO 4 2− of the aerosol matter. A novel type of artifact was observed in sampling campaigns during fall. Presumably as a results of a high water content, the collected aerosol matter became liquefied and a large fraction of the water soluble components was driven through the filter into the support pad underneath. The negative “wetting artifact” was much more pronounced for the thin CA than for the relatively thick QF filters. The total amount of aerosol matter in the CA/pad and QF/pad combinations was the same, indicating that this kind of artifact can be corrected for. Ammonium nitrate-to-sulfate concentration ratios were low in summer (∼ 0.5 for PM2.5) but high in fall (⩾ 2). Furthermore, the ion fractions were low in summer (∼ 30%), but quite high in fall (⩾ 60%), and even higher in winter." @default.
- W2024893247 created "2016-06-24" @default.
- W2024893247 creator A5013412968 @default.
- W2024893247 creator A5078226762 @default.
- W2024893247 date "2004-10-01" @default.
- W2024893247 modified "2023-10-18" @default.
- W2024893247 title "Thermodesorption of aerosol matter on multiple filters of different materials for a more detailed evaluation of sampling artifacts" @default.
- W2024893247 cites W1967701473 @default.
- W2024893247 cites W1970730826 @default.
- W2024893247 cites W1985315741 @default.
- W2024893247 cites W1988190028 @default.
- W2024893247 cites W1995872439 @default.
- W2024893247 cites W1996609899 @default.
- W2024893247 cites W2006207368 @default.
- W2024893247 cites W2010565457 @default.
- W2024893247 cites W2010826888 @default.
- W2024893247 cites W2028556622 @default.
- W2024893247 cites W2032843796 @default.
- W2024893247 cites W2038581511 @default.
- W2024893247 cites W2048558655 @default.
- W2024893247 cites W2072396813 @default.
- W2024893247 cites W2074117947 @default.
- W2024893247 cites W2100327407 @default.
- W2024893247 cites W2135674240 @default.
- W2024893247 cites W4235512020 @default.
- W2024893247 doi "https://doi.org/10.1016/j.atmosenv.2004.05.047" @default.
- W2024893247 hasPublicationYear "2004" @default.
- W2024893247 type Work @default.
- W2024893247 sameAs 2024893247 @default.
- W2024893247 citedByCount "25" @default.
- W2024893247 countsByYear W20248932472012 @default.
- W2024893247 countsByYear W20248932472013 @default.
- W2024893247 countsByYear W20248932472015 @default.
- W2024893247 countsByYear W20248932472016 @default.
- W2024893247 countsByYear W20248932472020 @default.
- W2024893247 countsByYear W20248932472021 @default.
- W2024893247 crossrefType "journal-article" @default.
- W2024893247 hasAuthorship W2024893247A5013412968 @default.
- W2024893247 hasAuthorship W2024893247A5078226762 @default.
- W2024893247 hasConcept C105795698 @default.
- W2024893247 hasConcept C107872376 @default.
- W2024893247 hasConcept C113196181 @default.
- W2024893247 hasConcept C126857682 @default.
- W2024893247 hasConcept C128489963 @default.
- W2024893247 hasConcept C147789679 @default.
- W2024893247 hasConcept C178790620 @default.
- W2024893247 hasConcept C179104552 @default.
- W2024893247 hasConcept C185592680 @default.
- W2024893247 hasConcept C199289684 @default.
- W2024893247 hasConcept C24245907 @default.
- W2024893247 hasConcept C2776384668 @default.
- W2024893247 hasConcept C2776617377 @default.
- W2024893247 hasConcept C2778504605 @default.
- W2024893247 hasConcept C2779345167 @default.
- W2024893247 hasConcept C33923547 @default.
- W2024893247 hasConcept C519885992 @default.
- W2024893247 hasConcept C96278889 @default.
- W2024893247 hasConceptScore W2024893247C105795698 @default.
- W2024893247 hasConceptScore W2024893247C107872376 @default.
- W2024893247 hasConceptScore W2024893247C113196181 @default.
- W2024893247 hasConceptScore W2024893247C126857682 @default.
- W2024893247 hasConceptScore W2024893247C128489963 @default.
- W2024893247 hasConceptScore W2024893247C147789679 @default.
- W2024893247 hasConceptScore W2024893247C178790620 @default.
- W2024893247 hasConceptScore W2024893247C179104552 @default.
- W2024893247 hasConceptScore W2024893247C185592680 @default.
- W2024893247 hasConceptScore W2024893247C199289684 @default.
- W2024893247 hasConceptScore W2024893247C24245907 @default.
- W2024893247 hasConceptScore W2024893247C2776384668 @default.
- W2024893247 hasConceptScore W2024893247C2776617377 @default.
- W2024893247 hasConceptScore W2024893247C2778504605 @default.
- W2024893247 hasConceptScore W2024893247C2779345167 @default.
- W2024893247 hasConceptScore W2024893247C33923547 @default.
- W2024893247 hasConceptScore W2024893247C519885992 @default.
- W2024893247 hasConceptScore W2024893247C96278889 @default.
- W2024893247 hasLocation W20248932471 @default.
- W2024893247 hasOpenAccess W2024893247 @default.
- W2024893247 hasPrimaryLocation W20248932471 @default.
- W2024893247 hasRelatedWork W1991605059 @default.
- W2024893247 hasRelatedWork W2045482543 @default.
- W2024893247 hasRelatedWork W2168676148 @default.
- W2024893247 hasRelatedWork W2173623933 @default.
- W2024893247 hasRelatedWork W2236315725 @default.
- W2024893247 hasRelatedWork W2322740945 @default.
- W2024893247 hasRelatedWork W2497355077 @default.
- W2024893247 hasRelatedWork W2547910367 @default.
- W2024893247 hasRelatedWork W3159612368 @default.
- W2024893247 hasRelatedWork W4244232061 @default.
- W2024893247 isParatext "false" @default.
- W2024893247 isRetracted "false" @default.
- W2024893247 magId "2024893247" @default.
- W2024893247 workType "article" @default.