Hygroscopic properties
Hygroscopic properties and cloud condensation nuclei activation of limonene-derived organosulfates and their mixtures with ammonium sulfate
... modestly hygroscopic; hence in terms of water uptake, the significant surface tension ef- fect must be countered by other effects in the droplets, such as simultaneous bulk-to-surface partitioning or limited water ...
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Chemical composition, microstructure, and hygroscopic properties of aerosol particles at the Zotino Tall Tower Observatory (ZOTTO), Siberia, during a summer campaign
... 8. Hygroscopic properties of accumulation (a, b), and coarse (c, d) modes of ZOTTO aerosol samples: (a, c) mass growth factors (G m ) observed as a function of relative humidity compared to KIM; (b, d) ...
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The effect of photochemical ageing and initial precursor concentration on the composition and hygroscopic properties of β-caryophyllene secondary organic aerosol
... 3.5 Hygroscopic properties of β-caryophyllene SOA The hygroscopic growth at 90 % RH was measured by the HTDMA for particles generated during the experiments listed in Tables 1a and ...particle ...
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Chemical composition, microstructure, and hygroscopic properties of aerosol particles at the Zotino Tall Tower Observatory (ZOTTO), Siberia, during a summer campaign
... The hygroscopic properties of aerosol particles in the northern European boreal forests under sub- and super- saturated conditions have been studied extensively using the Hygroscopicity Tandem Differential ...
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Hygroscopic properties of aerosol particles at high relative humidity and their diurnal variations in the North China Plain
... optical properties and direct radiative forcing in the surface boundary layer at Xinken in Pearl River Delta of China: An observation based numerical study, ...
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Hygroscopic properties of atmospheric aerosol particles over the Eastern Mediterranean: implications for regional direct radiative forcing under clean and polluted conditions
... During the field study, different air masses were observed and they were classified with respect to their origin based on air mass back trajectory analysis (see Sect. 4.1). In particular, air masses of marine origin from ...
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Vertical profiling of aerosol hygroscopic properties in the planetary boundary layer during the PEGASOS campaigns
... Figure 7a illustrates the averaged GF-PDFs in the newly forming ML. A first compar- ison between the two dry sizes probed by the WHOPS reveals a strong resemblance of the GF-PDF shapes for GF > 1.5, except for a small ...
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Cork oak (Quercus suber L.) wood hygroscopic properties and dimentional stability
... a hygroscopic material, ...These properties are important in wood processing, since most of the drying defects can be avoided if the process is performed according to the specific wood-water rela- tions and ...
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The effect of photochemical ageing and initial precursor concentration on the composition and hygroscopic properties of <i>β</i>-caryophyllene secondary organic aerosol
... In the condensed phase, the ions of m/z 251 and 253 were observed to have some of the largest peaks in the mass spectrum at each stage of the experiment and were identified to be β -cary[r] ...
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Investigation of the hygroscopic properties of Ca(NO<sub>3</sub>)<sub>2</sub> and internally mixed Ca(NO<sub>3</sub>)<sub>2</sub>/CaCO<sub>3</sub> particles by micro-Raman spectrometry
... also be strongly hydrophobic so that heterogeneous nucleation of the droplets on the substrate can be suppressed. Thus, we used 0.1 mm thick Teflon ® FEP film (DuPont) as the substrate. Its strengths include: (1) high ...
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Field measurements of hygroscopic properties and state of mixing of nucleation mode particles
... measured (westerly air flow) pre-existing 20 nm particles were hygroscopic with growth similar to or slightly less than pure ammonium sulphate particles. On the other hand, the 10 nm (and 8 nm ) particles ...
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In-cloud processes of methacrolein under simulated conditions – Part 3: Hygroscopic and volatility properties of the formed secondary organic aerosol
... The hygroscopic and volatility properties of sec- ondary organic aerosol (SOA) produced from the nebu- lization of solutions after aqueous phase photooxidation of methacrolein was experimentally studied in ...
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A single parameter representation of hygroscopic growth and cloud condensation nucleus activity
... model or actual atmospheric aerosols can be conveniently fit by a single parameter. We suggest that κ may be use- ful in streamlining aerosol compositional models, including those that link to drop activation schemes, as ...
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Relating hygroscopicity and optical properties to chemical composition and structure of secondary organic aerosol particles generated from the ozonolysis of α-pinene
... Concerning hygroscopic properties, a size GF of SOA derived from limited available data is used (O’Donnell et ...the hygroscopic and optical prop- erties of SOA are not static and depend on their ...
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Moisture dynamic sorption isotherms and thermodynamic properties of parchment specialty coffee (Coffea arabica L.)
... the hygroscopic properties of dried coffee beans based on their heterogeneous material condition (green versus parchment) to establish the best storage conditions for guaranteed quality, since the initial ...
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PROPRIEDADES QUÍMICAS E ENERGÉTICAS DE RESÍDUOS FLORESTAIS PROVENIENTES DE PLANTAÇÕES DE PINUS
... chemical properties, the bark and the wood were different of each other due to the extractives content, which reflected in their ashes ...energetic properties, the bark presented higher properties ...
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Thermodynamic properties of water desorption in Buchenavia capitata (Vahl) Eichler
... Thermodynamic properties provide information on energy demand and kinetic parameters in water sorption processes in agricultural ...thermodynamic properties involved in the water desorption process in ...
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On aerosol hygroscopicity, cloud condensation nuclei (CCN) spectra and critical supersaturation measured at two remote islands of Korea between 2006 and 2009
... be attributed to the difference in nitrate and sulfate concen- trations because nitrate is as hygroscopic as sulfate (Brechtel and Kreidenweis, 2000) and because the abundant amount of organics for both back ...
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Impact of mixing state and hygroscopicity on CCN activity of biomass burning aerosol in Amazonia
... to hygroscopic mixing state under equilibrium conditions is also significant, and the as- sumption of total internal mixing could result in an overes- timation of the CCN population that can range from 10 to 100 % ...
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LACIS-measurements and parameterization of sea-salt particle hygroscopic growth and activation
... the hygroscopic growth and activation of sea-salt particles which were generated from three different sea-water ...the hygroscopic growth of these ...
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