X-ray methods for the chemical characterization of atmospheric aerosols
The development and use of several x-ray methods for the chemical characterization of atmospherical aerosol particulate samples are described. These methods are based on the emission, absorption, and scattering of x-ray photons with emphasis on the optimization for the non-destructive analysis of dilute specimens. Techniques discussed include photon induced energy dispersive x-ray fluorescence, extended x-ray absorption fine structure spectroscopy using synchrotron radiation and high-rate x-ray powder diffractometry using a position-sensitive gas proportional counter. These x-ray analysis methods were applied to the measurement of the chemical compositions of size-segregated aerosol particulate samples obtained with dichotomous samplers. The advantages of the various methods for use in such measurements are described and results are presented. In many cases, the complementary nature of the analytical information obtained from the various measurements is an important factor in the characterization of the sample. For example, the multiple elemental analyses obtained from x-ray fluorescence can be used as a cross check on the major compounds observed by powder diffraction.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6343374
- Report Number(s):
- LBL-12493; CONF-810647-10; ON: DE81028874; TRN: 81-015365
- Resource Relation:
- Conference: Conference on X- and gamma-ray sources and applications, Ann Arbor, MI, USA, 10 Jun 1981
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aerosol analysis for the Regional Air Pollution Study. Final report
AUTOMATIC PARTICULATE SULFUR MEASUREMENTS WITH A DICHOTOMOUS SAMPLER AND ON-LINE X-RAY FLUORESCENCE ANALYSIS
Related Subjects
AEROSOLS
CHEMICAL COMPOSITION
X-RAY FLUORESCENCE ANALYSIS
ABSORPTION SPECTROSCOPY
AMMONIUM COMPOUNDS
OPTIMIZATION
PARTICLE SIZE
PHOTONS
SYNCHROTRON RADIATION
TRACE AMOUNTS
ZINC
ZINC OXIDES
ZINC SULFATES
BREMSSTRAHLUNG
CHALCOGENIDES
CHEMICAL ANALYSIS
COLLOIDS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
MASSLESS PARTICLES
METALS
NONDESTRUCTIVE ANALYSIS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SIZE
SOLS
SPECTROSCOPY
SULFATES
SULFUR COMPOUNDS
X-RAY EMISSION ANALYSIS
ZINC COMPOUNDS
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)