ammonium sulfate bertram
- ammonium sulfate bertram
Granulation by spray coating aqueous solution of ammonium sulfate to produce large spherical granules in a fluidized bed. ... Ammonium sulfate ((NH 4) 2 SO 4) is an excellent fertilizer which provides nitrogen (N) ... and Bertram (2006) found that 1 ...
Incomplete sulfate aerosol neutralization despite excess ammonia in the eastern US: a possible role of organic aerosol Rachel F. Silvern 1, Daniel J. Jacob 1,2, Patrick S. Kim 1, Eloise A. Marais 2, and Jay R. Turner 3 5 1Department of Earth and Planetary Scien ces, Harvard University, Cambridge, MA, USA
Albert L. Bertram ABSTRACT: Minol II ('40% TNT, 40% ammonium nitrate, 20% aluminum) is useful as an explosive fill for bombs, because its use substitutes ... dhange by the addition of 0.25 to 5.0% ammonium sulfate ((NH4)2SO4) or ammonium phosphate ((NH 4)3P04) to molten AN.
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 increases, DRH decreases to maintain unity solution saturation with respect to ammonium sulfate and ERH de-creases to maintain critical supersaturation (Bertram ...
It is now well recognized that mixed organic–inorganic particles are abundant in the atmosphere. While there have been numerous studies of efflorescence of mixed organic–inorganic particles close to 293 K, there are only a few at temperatures less than 273 K. Understanding the efflorescence properties of the
HMC Faculty Publications (Undergraduate co-authors are denoted by an asterisk) Hawkins, L. N., H. G. Welsh*, M. V. Alexander* (2018), Evidence for pyrazine-based chromophores in cloudwater mimics containing methylglyoxal and ammonium sulfate, Atmospheric Chemistry and Physics, 18, 12413-12431, doi: 10.5194/acp-18-12413, available spectral data (Drive).
The 0.5 mol·L −1 solutions are prepared by dissolving analytical-grade ammonium sulfate and glutaric acid in the triply distilled water without further purification, which are used to generate aerosol droplets by an ultrasonic nebulizer. The sample droplets were deposited on two silicon substrates.
mixed with ammonium sulfate, ammonium bisulfate, ammonium nitrate or sodium chloride Y. You, L. Renbaum-Wolff, and A. K. Bertram ... Bertram et al., 2011; Reid et al., 2011; Song et al., 2012a). Knowledge of these phase transitions is required for predict-ing …
Daniel KnopF, Associate Professor ... D. A., Lopez, M. D. Homogeneous Ice Freezing Temperatures and Ice Nucleation Rates of Aqueous Ammonium Sulfate and Aqueous Levoglucosan Particles for Relevant Atmospheric Conditions ... D. A., Bertram, A. K., Deliquescence and Crystallization of Ammonium Sulfate ...
by spray coating aqueous solution of ammonium sulfate to produce ... cite this article in press as: Wang, G., et al. Granulation by spray coating aqueous solution of ammonium sulfate to produce large spherical ... and Bertram (2006) 81. found that 1wt% of kaolinite induced the crystalliza-tion. 82. of (NH. 4) 2. SO. 4. at low supersaturation ...
The Effects of Sulfuric Acid and Ammonium Sulfate Coatings on the Ice Nucleation Properties of Kaolinite Particles Article (PDF Available) in Geophysical Research Letters 36(2) · January 2009 ...
Effects of sulfuric acid and ammonium sulfate coatings on the ice nucleation properties of kaolinite particles; ... (2009), Effects of sulfuric acid and ammonium sulfate coatings on the ice nucleation properties of kaolinite particles, Geophys. Res. Lett., 36, L02811, doi: 10.1029/2008GL035997. URL
Allan Bertram, University of British Columbia . I have included here examples of aerosol particle found in the atmosphere. They include surfuric acid water droplets, produce\ by the oxidation of SO2 in the atmosphere, ammonium sulfate produced by neutralization of sulfuric acid particles and organic aerosols produced by the oxidatoin of ...
Ammonium sulfate did not affect pulmonary function when 17 healthy humans were exposed for 16 min to 0.1 and 1 mg/cu m ammonium sulfate (calculated as H2SO4). In asthmatics of the same age no symptoms occurred after exposure, however, slight effects on pulmonary function were reported.
Hygroscopic growth of ammonium sulfate/dicarboxylic acids. Authors. ... We have measured the water activity of pure dicarboxylic acids and eutonic mixtures of ammonium sulfate/dicarboxylic acids at 25°C and have calculated van't Hoff factors for each individual system. ... Mijung Song, Scot T. Martin, Allan K. Bertram, Liquid–liquid phase ...
namic models. The ammonium–sulfate ratio averages only 1.04 0.21molmol1 in the Southeast, even though ammo-nia is in large excess, as shown by the ammonium–sulfate ratio in wet deposition and by the presence of gas-phase am-monia. It further appears that the ammonium–sulfate aerosol ratio is insensitive to the supply of ammonia, remaining low
Crystallization of Aqueous Ammonium Sulfate Particles Internally Mixed with Soot and Kaolinite: Crystallization Relative Humidities and Nucleation Rates Atul Pant , Matthew T. Parsons , and Allan K. Bertram *
Deliquescence behavior of organic/ammonium sulfate aerosol ... In this paper, we report the solubility of a series of dicarboxylic acids in saturated ammonium sulfate solution as a function of temperature. ... Mijung Song, Scot T. Martin, Allan K. Bertram, Liquid–liquid phase separation in atmospherically relevant particles consisting of ...
at 273K and 290K for particles containing ammonium sul-fate and 1,2,6-hexanetriol (Bertram et al., 2011). Schill and Tolbert, 2013 reported that SRH results were similar for tem-peratures from 240 to 265K for particles containing ammo-nium sulfate mixed with 1,2,6-hexanetriol and particles con-taining ammonium sulfate, 1,2,6-hexanetriol, and 2 ...
Traditional Methods for Whey Protein Isolation and Concentration: Effects on Nutritional Properties and Biological Activity 369 ... and ammonium sulphate precipitation methods were similar to values reported by Foegeding and Luck , who found that ...
Gary Bertram [email protected] ... Standards of Performance for Ammonium Sulfate Manufacture: Bill Peterson [email protected] 916-551-7881: TCEQ: 59: QQ: 60.430-60.435: Standards of Performance for the Graphic Arts Industry: Publication Rotogravure Printing: Gary Bertram [email protected]
ammonium sulfate (NH4)2SO4 aerosols in McRAS-AC and its inﬂuence on the optical properties of both liquid and ice clouds. First an (NH4)2SO4 parameterization was included in the APM to assess its effect on clouds vis-`a-vis that of the other aerosols. Subsequently, several evaluation tests were conducted over the ARM Southern Great Plain (SGP ...
What Are Ammonium Sulfate Uses? Common uses of ammonium sulfate include fertilizers, circuit boards, herbicides and vaccines. ... After application to damp soil, ammonium particles escape, causing an increase in the acidity level of surrounding soil. The rising acidity creates a lower pH level in the soil, increasing growth of plants and crops.
Sep 22, 2006· Laboratory measurements support a cirrus cloud formation pathway involving heterogeneous ice nucleation by solid ammonium sulfate aerosols. Ice formation occurs at low ice-saturation ratios consistent with the formation of continental cirrus and an interhemispheric asymmetry observed for cloud onset. ... A. K. Bertram, D. D. Paterson, J. J ...
Ammonium sulfate, analytical standard, for Nitrogen Determination According to Kjeldahl Method, traceable to NIST SRM 194, RES1427A-A7 Ammonium sulfate, PharmaGrade, NF, Manufactured under appropriate GMP controls for pharma or biopharmaceutical production.,
Blood Meal (for organic gardening) or High Nitrogen Fertilizer- such as Ammonium Sulfate (for conventional gardening) Step 1: Tip bales on the sides- keeping the strings facing out. Step 2: Conditioning process- Keep the bales moist for the first two three weeks.
ence of NOx can decrease the DRH of ammonium sulfate by at least 5%, though the exact decrease was not quantiﬁed. Bertram et al. (2011) likewise presented an initial data set for the effects of SOM produced by isoprene photo-oxidation on the phase transitions of ammonium sulfate, showing a de-crease in DRH for organic volume fractions from 0 ...
Effects of sulfuric acid and ammonium sulfate coatings on the ice nucleation properties of kaolinite particles. Michael L. Eastwood. Department of Chemistry, University of British Columbia, , British Columbia, Canada ... Donna I. Chernoff and Allan K. Bertram, Effects of sulfate coatings on the ice nucleation properties of a biological ice ...
Bertram et al. (1996) used Fourier transform infrared (FTIR) extinction spectroscopy to ... In contrast, ammonium sulfate droplets exhibited less than 39 K of supercooling, and the supercooling was inversely proportional to the so-lution concentration (l, 1).
Deliquescence and crystallization of ammonium sulfate‐glutaric acid and sodium chloride‐glutaric acid particles. Atul Pant. Dept. of Chemistry, the Univ. of British Columbia, Vancouver, B. C., Canada ... Scot T. Martin and Allan K. Bertram, Liquid–liquid phase separation in atmospherically relevant particles consisting of organic species ...
Sulfate aerosols, ubiquitous throughout the upper troposphere, are known to be important in the formation of cirrus clouds. Several labo-ratory studies, using a variety of techniques, have established homogeneous ice nucleation conditions for aqueous sulfuric acid and ammonium sulfate …
K., Geiger, F. M., Thomson, R. J., and Bertram, A. K. (2017). The effect of hydroxyl functional groups and molar mass on the viscosity of non-crystalline organic and organic–water particles. ... Heterogeneous uptake of dimethylamine by ammonium sulfate – sucrose mixed particles. 2016 American Geophysical Union Fall Meeting, San Francisco ...
Afterward, the freezing point depression due to the ammonium sulfate concentration in the drop was added to this value. As one can see from Table 3 the model results for ammonium sulfate agree well with the experimental results from Bertram et al. (2000) indicating that the parameterization was correctly implemented into the present model.
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