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Amine exchange into ammonium bisulfate and ammonium nitrate nuclei
Amine ammonium bisulfate ammonium nitrate nuclei
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2010/8/12
The exchange kinetics and thermodynamics of amines for ammonia in small (1–2 nm diameter) ammonium bisulfate and ammonium nitrate clusters were investigated using electrospray ionization Fourier trans...
Depositional ice nucleation on solid ammonium sulfate and glutaric acid particles
Depositional ice nucleation solid ammonium sulfate glutaric acid particles
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2010/3/16
Heterogeneous ice nucleation on solid ammonium sulfate and glutaric acid particles was studied using optical microscopy and Raman spectroscopy. Optical microscopy was used to detect selective nucleati...
Glyoxal uptake on ammonium sulphate seed aerosol: reaction products and reversibility of uptake under dark and irradiated conditions
Glyoxal ammonium sulphate seed aerosol irradiated conditions
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2009/6/2
Chamber studies of glyoxal uptake onto ammonium sulphate aerosol were performed under dark and irradiated conditions to gain further insight into processes controlling glyoxal uptake onto ambient aero...
Laboratory studies of ice formation pathways from ammonium sulfate particles
ice formation pathways ammonium sulfate particles
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2009/3/13
Cirrus clouds are composed of ice particles and their formation pathways have been studied extensively in the laboratory. The ability of ammonium sulfate particles to act as nuclei for cirrus clouds h...
Analysis of the hygroscopic and volatile properties of ammonium sulphate seeded and unseeded SOA particles
hygroscopic and volatile properties ammonium sulphate SOA particles
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2009/3/12
The volatile and hygroscopic properties of ammonium sulphate seeded and unseeded secondary organic aerosol (SOA) derived from the photo-oxidation of atmospherically relevant concentrations of α-pinene...
A study of the phase transition behavior of internally mixed ammonium sulfate - malonic acid aerosols
phase transition behavior internally mixed ammonium sulfate malonic acid aerosols
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2009/3/4
This is a study into the phase transitions of aerosol composed of the ternary system ammonium sulfate (AS) - malonic acid (MA) - water using infrared extinction spectroscopy. Twelve compositions were ...
Effects of the physical state of tropospheric ammonium-sulfate-nitrate particles on global aerosol direct radiative forcing
tropospheric ammonium-sulfate-nitrate particles global aerosol radiative forcing
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2009/2/20
The effect of aqueous versus crystalline sulfate-nitrate-ammonium tropospheric particles on global aerosol direct radiative forcing is assessed. A global three-dimensional chemical transport model pre...
Impact of palmitic acid coating on the water uptake and loss of ammonium sulfate particles
palmitic acid ammonium sulfate particles
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2009/2/12
While water insoluble organics are prevalent in the atmosphere, it is not clear how the presence of such species alters the chemical and physical properties of atmospheric aerosols. Here we use a com...
Modelling of nitrate and ammonium-containing aerosols in presence of sea salt
nitrate ammonium-containing aerosols sea salt
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2009/1/16
A thermodynamical model for treatment of gas/aerosol partitioning of semi volatile inorganic aerosols has been implemented in a global chemistry and aerosol transport model (Oslo CTM2). The sulphur cy...
Phase transitions and hygroscopic growth of aerosol particles containing humic acid and mixtures of humic acid and ammonium sulphate
Phase transitions hygroscopic growth of aerosol particles humic acid ammonium sulphate
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2009/1/4
The phase transitions and hygroscopic growth of two humic acid aerosols (Aldrich sodium salt and Leonardite Standard (IHSS)) and their mixtures with ammonium sulphate have been investigated using a co...
Parameterization of N2O5 reaction probabilities on the surface of particles containing ammonium, sulfate, and nitrate
N2O5 sulfate nitrate
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2008/11/19
A parameterization was developed for the heterogeneous reaction probability (γ) of N2O5 as a function of temperature, relative humidity (RH), particle composition, and phase state, for use in advanced...
Calibration and measurement uncertainties of a continuous-flow cloud condensation nuclei counter (DMT-CCNC): CCN activation of ammonium sulfate and sodium chloride aerosol particles in theory and experiment
calibration continuous-flow cloud condensation nuclei counter CCN sodium chloride aerosol
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2008/10/31
Experimental and theoretical uncertainties in the measurement of cloud condensation nuclei (CCN) with a continuous-flow thermal-gradient CCN counter from Droplet Measurement Technologies (DMT-CCNC) ha...