The characterization of atmospheric aerosols: Application to heterogeneous gas-particle reactions

Technical Report · Thu Dec 31 04:00:00 EST 1998

DOI:https://doi.org/10.2172/560751· OSTI ID:560751

Robinson, J M; Henson, B F; Wilson, K R ^[1]; Prather, K A; Noble, C A ^[2]

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1. Los Alamos National Lab., NM (United States)
2. Univ. of California, Riverside, CA (United States)

This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project of the Los Alamos National Laboratory (LANL). The objective of this collaborative research project is the measurement and modeling of atmospheric aerosols and heterogeneous (gas/aerosol) chemical reactions. The two major accomplishments are single particle characterization of tropospheric particles and experimental investigation of simulated stratospheric particles and reactions thereon. Using aerosol time-of-flight mass spectrometry, real-time and composition measurements of single particles are performed on ambient aerosol samples. This technique allows particle size distributions for chemically distinct particle types to be described. The thermodynamics and chemical reactivity of polar stratospheric clouds are examined using vapor deposited thin ice films. Employing nonlinear optical methods, as well as other techniques, phase transitions on both water and acid ices are monitored as a function of temperature or the addition of gases.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 560751
• Report Number(s): LA-UR--97-3241; ON: DE98001515
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTIONS
CLOUDS
FILMS
GASES
ICE
MASS SPECTRA
PARTICLE SIZE
PHASE TRANSFORMATIONS
THERMODYNAMICS
WATER