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cal potential of ammonium sulfate, explains the decrease in DRH and ERH values with the increase of organic concen-tration for certain organics. Thus, as the concentration of or-ganics …
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In the following we studied liquid-liquid phase separation in particles containing organics mixed with the following salts: ammonium sulfate, ammonium bisulfate, ammonium …
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Download scientific diagram | Raman spectra of (a) a pure ammonium sulfate particle, (b) a pure 4-dihydroxy-3-methoxybenzeneacetic acid particle, (c) the core of a mixed 4-dihydroxy-3 ...
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C. Sodium Sulphate (Na 2SO 4): The anhydrous form of sodium sulphate was used in the experiment, with a molar mass of 142.04g/mol and a percentage purity of 99%. Sodium …
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effective for measuring ice nucleation in sulfate aerosol [Bertram et al., 1996; Cziczo and Abbatt, 1999]. We deviate from earlier FTIR studies, however, in our method of ... ammonium sulfate …
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[1] We show that the phase of ice that crystallizes in solution droplets, under conditions relevant for the upper troposphere (UT) and tropopause region (typically >188 K), is …
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ammonium sulfate has been shown to be a poor nucleus for ... monium sulfate (Bertram et al., 2011; Buajarern et al., 2007). For systems in which phase separation does not occur, or-
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In a first set of measurements focused on the laboratory samples, we investigated the phase behavior of particles consisting of ammonium sulfate mixed with SOM that had been produced for conditions designed to simulate …
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Allan K. Bertram has included themes like Phytoplankton, Sea salt and Precipitation in his Sea spray study. The Kaolinite study which covers Ammonium sulfate that intersects with …
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Abstract. Although knowledge of the physical state of aerosol particles is essential to understand atmospheric chemistry model and measurements, information on the viscosity and …
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Predicting the relative humidities of liquid-liquid phase separation, efflorescence, and deliquescence of mixed particles of ammonium sulfate, organic material, and water using …
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The deliquescence and crystallization of ammonium sulfate particles internally mixed with water-soluble organic material have been studied, restricted to an organic mass fraction of less than …
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Y. You, L. Renbaum-Wolff, A. K. Bertram. Liquid–liquid phase separation in particles containing organics mixed with ammonium sulfate, ammonium bisulfate, ammonium nitrate or sodium …
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The Cryo- TEM results indicate that ammonium sulfate particles (or particles at least dominated by ammonium sulfate) are mixed with a secondary compound that separated during freezing in …
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The ammonium–sulfate ratio averages only 1.04 ± 0.21 mol mol⁻¹ in the Southeast, even though ammonia is in large excess, as shown by the ammonium–sulfate ratio in wet …
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4 /, ammonium sulfate (2NH C 4, SO 2 4 /, and combinations in between. This speciation has important im-plications for aerosol mass, hygroscopicity, and acidity (Mar-tin, 2000). When …
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Atmos. Chem. Phys., 15, 8975–8986, 2015 doi:10.5194/acp-15-8975-2015 © Author(s) 2015. CC Attribution 3.0 License.
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out e ect, described by the Setchenov equation (Bertram et al., 2011; Desnoyers and Ichhaporia, 1969). Organics whose O:C ratio is bigger than ˘0.7, such as glycerol, were found by Bertram …
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[10] The minimum deliquescence relative humidity for the ammonium sulfate-glutaric acid system and the sodium chloride-glutartic acid system occurred at 0.5 ± 0.1 mole …
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Download scientific diagram | (a) SRH of mixed organic–ammonium sulfate particles as a function of O : C measured at four different temperatures. Different symbols represent the different ...
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Fig. 1. Optical images and illustrations of particles containing 2-methylglutaric acid and one of the inorganic salts with OIR= 2.0±0.1. Shown in the images and illustrations are the relative …
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Ammonium sulfate aerosol mixed with organic polyols with different O : C ratios, including 1,4-butanediol, glycerol, 1,2,6-hexanetriol, 1,2-hexanediol, and 1,5-pentanediol have …
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Since the sulfate fraction is often partially or fully neutralised by ammonium (Dibb et al., 1996; Huebert et al., 1998; Tal-bot et al., 1998; Dibb et al., 2000; Lee et al., 2003), mixed organic …
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What is Ammonium Sulfate? Ammonium sulfate is a crystalline salt commonly used in agriculture. Composed of 21% ammoniacal nitrogen and 60% sulfuric anhydride, it is a water-soluble …
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Supporting: 26, Contrasting: 5, Mentioning: 210 - Abstract. As the relative humidity varies from high to low values in the atmosphere, particles containing organic species and inorganic salts …
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Enhanced Nutrient Absorption. Enhanced Nutrient Absorption is a crucial aspect of using ammonium sulfate fertilizer in agriculture. The unique chemical structure of this fertilizer plays …
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These highly cited papers received enough citations to place it in the top 1% of its academic field based on a highly cited threshold for the field and publication year (On Web of Science).
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Liquid–liquid phase separation in particles containing organics mixed with ammonium sulfate, ammonium bisulfate, ammonium nitrate or sodium chloride ... Robert Wagner, Luisa Ickes, …
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A similar phase separation phenomenon may also occur when the aqueous phase is dominantly composed of ammonium sulfate, as oleic acid is not a highly oxygenated organic compound …
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The particles were composed of ammonium sulfate ([NH 4] 2 SO 4) seed and a secondary organic matter (SOM) shell formed from oxidized α-pinene or isoprene. The …
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Deliquescence, Efflorescence, and Phase Miscibility of Mixed Particles of Ammonium Sulfate and Isoprene-Derived Secondary Organic Material . M.L. Smith, A.K Bertram, and S.T. Martin . S1. …
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AK Bertram, et al., Predicting the relative humidities of liquid-liquid phase separation, efflorescence, and deliquescence of mixed particles of ammonium sulfate, organic material, and water using the organic-to-sulfate …
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Read and download Predicting the relative humidities of liquid-liquid phase separation, efflorescence, and deliquescence of mixed particles of ammonium sulfate, organic material, …
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The classical homogeneous nucleation theory was employed to calculate the efflorescence relative humidity (ERH) of airborne ammonium sulfate particles with a wide size …
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[1] N 2 O 5 reactivity has been measured directly for the first time on ambient aerosol particles using an entrained aerosol flow reactor coupled to a custom-built chemical …
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Ammonium sulfate aerosol mixed with organic polyols with different O VC ratios, including 1,4-butanediol, glycerol, 1,2,6-hexanetriol, 1,2-hexanediol, and 1,5-pentanediol have
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Ammonium sulfate fertilizer is affordable for the average grower. The price of ammonium sulfate fertilizer is one of the primary reasons why some growers prefer to use this …
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