ammonium sulfate bertram

ammonium sulfate bertram

ACP - Liquid–liquid phase separation in particles ...

Liquid–liquid phase separation in particles containing organics mixed with ammonium sulfate, ammonium bisulfate, ammonium nitrate or sodium chloride Y. You, L. Renbaum-Wolff, and A. K. Bertram Y. You et al.,

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‪Allan Bertram‬ - ‪Google Scholar‬

Deliquescence and crystallization of ammonium sulfate particles internally mixed with water-soluble organic compounds MT Parsons, DA Knopf, AK Bertram The Journal of Physical Chemistry A 108 (52), 11600-11608 , 2004

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Resolving the mechanisms of hygroscopic growth and cloud ...

Oct 04, 2018  Bertram, A. K. et al. Predicting the relative humidities of liquid-liquid phase separation, efflorescence, and deliquescence of mixed particles of ammonium sulfate, organic material, and water ...

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Predicting the relative humidities of liquid-liquid phase ...

A. K. Bertram et al.: Predictions of phase transitions 10997 organic:sulfate mass ratio 0.1 1 10 organic:sulfate mass ratio 0.1 1 10 organic:sulfate mass ratio ... because ammonium sulfate or the organic material crystallised. Phase transitions for temperatures ranging from 290 to 298K. N2. The relative humidity of the gas was determined using

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Hy groscopic and phase separ ation proper ties of ammonium ...

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 ...

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Ammonium sulfate (NH4)2SO4 - PubChem

Ammonium sulfate is an inorganic sulfate salt obtained by reaction of sulfuric acid with two equivalents of ammonia.A high-melting (decomposes above 280℃) white solid which is very soluble in water (70.6 g/100 g water at 0℃; 103.8 g/100 g water at 100℃), it is widely used as a fertilizer for alkaline soils. It has a role as a fertilizer.

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Ice nucleation in sulfuric acid and ammonium sulfate particles

temperatures for ammonium sulfate solutions similar to those of Cziczo and Abbatt [ 1999]. Bertram et al. [2000] have used differential scanning calorimetry and optical microscopy to measure ice nucleation in ammonium sulfate aerosol. They observed much greater

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Protein Precipitation Using Ammonium Sulfate

With solid ammonium sulfate, a mortar and pestle can be used to break up any lumps. Use analytical grade as lower grade material is often contaminated with heavy metals. Addition of ammonium sulfate acidifies the solution so use at least a 50 mM HEPES or Tris

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8.4 Ammonium Sulfate - US EPA

8.4 Ammonium Sulfate 8.4.1 General1-2 Ammonium sulfate ([NH4]2SO4) is commonly used as a fertilizer. In 1991, U. S. facilities produced about 2.7 million megagrams (Mg) (3 million tons) of ammonium sulfate in about 35 plants. Production rates at these plants range from 1.8 to 360 Mg (2 to 400 tons) per year.

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ACP - Liquid–liquid phase separation in particles ...

Liquid–liquid phase separation in particles containing organics mixed with ammonium sulfate, ammonium bisulfate, ammonium nitrate or sodium chloride Y. You, L. Renbaum-Wolff, and A. K. Bertram Y. You et al.,

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Deliquescence and crystallization of ammonium sulfate ...

Deliquescence and crystallization of ammonium sulfate-glutaric acid and sodium chloride-glutaric acid particles Atul Pant, Abel Fok, Matthew T. Parsons, Jackson Mak, and Allan K. Bertram Dept. of Chemistry, the Univ. of British Columbia, Vancouver, B. C., Canada

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Effects of molecular weight and temperature on liquid ...

species and ammonium sulfate Y. You and A. K. Bertram Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada

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Efflorescence Transitions of Ammonium Sulfate Particles ...

Mackenzie L. Smith, Yuan You, Mikinori Kuwata, Allan K. Bertram, and Scot T. Martin . Phase Transitions and Phase Miscibility of Mixed Particles of Ammonium Sulfate, Toluene-Derived Secondary Organic Material, and Water. The Journal of Physical Chemistry A 2013, 117 (36) , 8895-8906.

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Airborne Particulate Monitoring - NIST

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 對aerosols produced by the oxidatoin of ...

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Crystallization of Aqueous Ammonium Sulfate Particles ...

Jun 17, 2006  Using optical microscopy, we investigated the crystallization of aqueous ammonium sulfate droplets containing soot and kaolinite, as well as the crystallization of aqueous ammonium sulfate droplets free of solid material. Our results show that soot did not influence the crystallization RH of aqueous ammonium sulfate particles under our experimental conditions.

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8.4 Ammonium Sulfate - US EPA

8.4 Ammonium Sulfate 8.4.1 General1-2 Ammonium sulfate ([NH4]2SO4) is commonly used as a fertilizer. In 1991, U. S. facilities produced about 2.7 million megagrams (Mg) (3 million tons) of ammonium sulfate in about 35 plants. Production rates at these plants range from 1.8 to 360 Mg (2 to 400 tons) per year.

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Amazon: ammonium sulfate

Ammonium Sulfate (1 Gallon Bucket, 9 lbs) by Earthborn Elements, Soil Fertilizer, Rich in Nitrogen, Lowers pH, Inorganic Salt, Improves Plant Soil Quality, Agricultural Uses, Resealable Bucket. 4.6 out of 5 stars. 180. $28.99.

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Deliquescence and Crystallization of Ammonium Sulfate ...

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 0.6. The organic species used were malonic acid, glycerol, levoglucosan (1,6-anhydro-β-d-glucopyranose), and Suwannee River fulvic acid. Our deliquescence results for systems with malonic acid and fulvic ...

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Purification and characterization of the pyruvate ...

The pyruvate-ferredoxin oxidoreductase from Clostridium acetobutylicum was purified to homogeneity and partially characterized. A 9.2-fold purification was achieved in a three step purification procedure: ammonium sulfate fractionation, chromatography on Phenyl Sepharose and on Procion Blue H-EGN12.

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Ammonium Sulfate - an overview ScienceDirect Topics

Ammonium sulfate ( (NH4) 2 SO 4) is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer since the chemical contains 21% (w/w) nitrogen and 24% (w/w) sulfur. The chemical has also been used in flame retardant chemicals because, as a flame retardant, it increases the combustion temperature of the ...

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Ice nucleation ability of ammonium sulfate aerosol ...

to ice Sice D1:55 at 51 C (Bertram et al.,2000). Crys-talline ammonium sulfate particles, however, which form be-low the efflorescence relative humidity of 40%–45% (Gao et al.,2006), can induce heterogeneous ice formation below about 50 C, e.g., at Sice D1:20 at 52 C (Abbatt et al., 2006). At these low temperatures, the deliquescence relative

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What is ammonium sulfate? - ChemistryRack

Aug 03, 2021  Ammonium sulfate is a nitrogen and sulfur buffer, both essential in soil and fertilizer chemistry. Chemical structure of ammonium sulfate. The upper image illustrates the molecular geometries of NH 4 + and SO 4 2- ions . The red spheres correspond to the oxygen atoms, the white to the hydrogen atoms, the blue to the nitrogen atom and the yellow to the sulfur atom.

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Ammonium iron(III) sulfate - Wikipedia

Ammonium iron(III) sulfate, NH 4 Fe(SO 4) 2 12 H 2 O, or NH 4 [Fe(H 2 O) 6](SO 4) 2 6 H 2 O, also known as ferric ammonium sulfate (FAS) or iron alum, is a double salt in the class of alums, which consists of compounds with the general formula AB(SO 4) 2 12 H 2 O. It has the appearance of weakly violet, octahedrical crystals.There has been some discussion regarding the origin of the ...

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Publications Bertram Research Group

You, Y., and Zorn, S.R. 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 mass ratio of the particle and the oxygen-to-carbon elemental ratio of the organic component. Atmos. Chem.

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(PDF) The Effects of Sulfuric Acid and Ammonium Sulfate ...

Pant, A., M.T. Parsons, and A.K. Bertram, Crystallization of aqueous ammonium sulfate particles 285 internally mixed with soot and kaolinite: Crystallization relative humidities and nucleation 286

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Phase State and Deliquescence Hysteresis of Ammonium ...

(LLPS) can be parameterized for the organic-to-sulfate ratio of SOA and the oxygen-to-carbon (O/C) ratio (Bertram et al. 2011 and further elaborated by Song et al. 2012), as recently reviewed by You et al. (2014). The evolution of SOM in the atmosphere is a complex phe-nomenon, and research is now seeking to constrain the param-

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Deliquescence, efflorescence, and supercooling of

Clapp et al., 1997; Martin et al., 1997; Bertram and Sloan, 1998], there have been no experimental measurements of the extent of supercooling exhibited by dilute ammonium sulfate aerosols. Indeed, any models of the extent of supercooling which are exhibited by ammonium sulfate aerosols, or any other salt aerosols for that matter,

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Crystallization of aqueous ammonium sulfate particles ...

Using classical nucleation theory and our experimental data, we determined that the interfacial tension between an ammonium sulfate critical nucleus and an aqueous ammonium sulfate solution is 0.064 +/- 0.003 J m(-2) (in agreement with our previous measurements), and the contact angle between an ammonium sulfate critical nucleus and a kaolinite ...

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Ammonium sulfate, ACS reagent H8N2O4S - PubChem

Ammonium sulfate, AR. Nonne-Apelt's reagent. sulfuric acid, diammonia salt. Ammonium sulfate 1 M solution. Ammonium sulfate, ACS reagent. CHEMBL2107724

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Ammonium Sulfate Mosaic Crop Nutrition

Ammonium sulfate (sometimes abbreviated as AS or AMS) has been produced for more than 150 years. Initially, it was made from ammonia released during manufacturing coal gas (used to illuminate cities) or from coal coke used to produce steel. Today, manufacturers make it by reacting sulfuric acid with heated ammonia.

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Ammonium Sulfate - an overview ScienceDirect Topics

Ammonium sulfate ( (NH4) 2 SO 4) is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer since the chemical contains 21% (w/w) nitrogen and 24% (w/w) sulfur. The chemical has also been used in flame retardant chemicals because, as a flame retardant, it increases the combustion temperature of the ...

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Ammonium Sulfate products – Martin Midstream Partners

Ammonium Sulfate (Coarse) is a white, crystalline powder with anti-caking agent. Ammonium Sulfate is used in wide range of industrial and agricultural applications. In agriculture ammonium sulfate is used in blends with other nutrients (Nitrogen, Phosphate, or Potash) or as a direct application to supply a source of sulfur “Fourth Major ...

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Safety Data Sheet - Fisher Sci

Ammonium Sulfate, Created by Global Safety Management, Inc. -Tel: 1-813-435-5161 - gsmsds If skin irritation occurs: Get medical advice/attention If eye irritation persists get medical advice/attention IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing Store ...

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Effects of molecular weight and temperature on liquid ...

species and ammonium sulfate Y. You and A. K. Bertram Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada

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Ice nucleation ability of ammonium sulfate aerosol ...

to ice Sice D1:55 at 51 C (Bertram et al.,2000). Crys-talline ammonium sulfate particles, however, which form be-low the efflorescence relative humidity of 40%–45% (Gao et al.,2006), can induce heterogeneous ice formation below about 50 C, e.g., at Sice D1:20 at 52 C (Abbatt et al., 2006). At these low temperatures, the deliquescence relative

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What We Know And Don’t Know About Ammonium Thiosulfate ...

May 13, 2019  Ammonium thiosulfate (ATS) is commonly added to liquid nitrogen (N) solutions to provide sulfur (S) to crop plants. Sulfur response trials have shown ATS to be an effective S fertilizer, however, thiosulfate and its first breakdown product, tetrathionate, are not utilized by plants.

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Ammonium Sulfate Market Global Industry Report, 2031

May 20, 2021  Improved Ammonium Sulfate Formulations Help Sustainably Boost Crop Yield. The ammonium sulfate market is projected to reach the revenue of US$ 5.9 Bn by the end of 2031. However, there is a need to improve the efficiency of global land usage in order to sustain crop production for the ever-increasing global population.

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