Prompt deliquescence and efflorescence of aerosol nanoparticles

Prompt deliquescence and efflorescence of aerosol nanoparticles

Literature reports have differed on the possibilities of discontinuous and continuous (i.e., prompt and nonprompt) deliquescence and efflorescence of aerosol particles in the nanosize regime. Experiments reported herein using a hygroscopic tandem nano-differential mobility analyzer demonstrate prompt deliquescence and efflorescence of ammonium sulfate particles having diameters from 6 to 60 nm....

Deliquescence and efflorescence of small particles.

We examine size-dependent deliquescence/efflorescence phase transformation for particles down to several nanometers in size. Thermodynamic properties of inorganic salt particles, coated with aqueous solution layers of varying thickness and surrounded by vapor, are analyzed. A thin layer criterion (TLC) is introduced to define a limiting deliquescence relative humidity (RH(D)) for small particle...

Deliquescence Behavior of Organic/Ammonium Sulfate Aerosol

Deliquescence, Efflorescence, and Water Activity in Ammonium Nitrate and Mixed Ammonium Nitrate/Succinic Acid Microparticles

We have investigated the thermodynamics and kinetics of ammonium nitrate/water and mixed ammonium nitrate/succinic acid/water microparticles. The water activity of ammonium nitrate microparticles is determined as a function of composition down to 12% relative humidity by accounting for the rapid evaporation of ammonia and nitric acid. Both the observed deliquescence and water activities for amm...

Nanoparticle phase transitions

Prompt deliquescence and efflorescence of aerosol nanoparticles G. Biskos, D. Paulsen, L. M. Russell, P. R. Buseck, and S. T. Martin Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093, USA Departments of Geological Sciences and Chemistry/Biochemistry, Arizona State...