Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Ephraim Woods"'
Autor:
Ephraim Woods, Pomaa Ofosuhene, Nora E. Burner, William E. Leiter, Alexandra Krez, Oliver T. Harris, Mark A. Hilton, Kathleen A. Burke
Publikováno v:
ACS Earth and Space Chemistry. 4:1424-1434
Time-resolved photoelectric activity of aerosol (TPEAA) experiments measure the kinetics of photochemically initiated reactions near the surface of aerosol particles. In the demonstration presented...
Publikováno v:
The Journal of Physical Chemistry A. 123:2901-2907
The photoemission of iodide from aqueous aerosol particle surfaces measures the surface concentration of iodide in predominantly supersaturated NaCl aerosol particles. Using the Langmuir model to describe the adsorption to the surface of aqueous iodi
Publikováno v:
The journal of physical chemistry. A. 120(51)
Photoelectric charging experiments monitor the uptake of pyrene onto NaCl aerosol particles coated with either oleic acid or myristic acid. In both cases, thin coatings produce a small net decrease in pyrene uptake. In the larger coverage limit, the
Publikováno v:
The Journal of Physical Chemistry A. 116:4137-4143
Photoelectric charging experiments measure heterogeneous uptake coefficients for pyrene on model marine aerosol particles, including NaCl, NaNO(3), and MgCl(2). The analysis employs a multilayer kinetic model that contains adsorption and desorption r
Publikováno v:
The Journal of Physical Chemistry A. 111:3336-3341
Excited-state absorption spectra for several coumarin derivatives adsorbed to aerosol particles provide linear solvation energy (LSE) relationships for the aerosol surfaces. This study focuses on NaCl and (NH4)2SO(4) particles as models for troposphe
Publikováno v:
The Journal of Physical Chemistry A. 109:10702-10709
Excited-state absorption spectroscopy and ionization threshold measurements for coumarin 314 (C314) adsorbed to the surface of NaCl aerosols characterize the chemical environment of the particle surface as a function of relative humidity (RH). An atm
Publikováno v:
The Journal of Physical Chemistry A. 107:9582-9587
The reactive uptake of gases by a particle is explored by numerically solving the associated partial differential equations. These equations explicitly couple the diffusion and reaction of multiple species in the particle. This approach makes it poss
Publikováno v:
The Journal of Physical Chemistry A. 107:2119-2125
Although laser vaporization of aerosol particles plays an important role in aerosol mass spectrometry, relatively little is known about disposal of excess energy in the degrees of freedom of the gas-phase species. A two-laser scheme, in which an infr
Publikováno v:
The Journal of Physical Chemistry A. 106:8085-8095
The technique of single-particle mass spectrometry has been coupled to a reaction flow tube to measure the uptake coefficient, γ, of ozone (O3) by oleic acid (9-octadecenoic acid) aerosol particles. The reaction was followed by monitoring the decrea
Publikováno v:
Analytical Chemistry. 74:2048-2052
Single aerosol particles of ethylene glycol and oleic acid are vaporized on a heater at temperatures between 500 and 700 K, and the resulting vapor plume is ionized by a 10.5-eV vacuum ultraviolet (VUV) laser. The mass spectra are compared to those o