An Intermethod Comparison of X-ray Photoelectron Spectroscopic (ESCA) Analysis of Atmospheric Particulate Matter
- 1 January 1976
- journal article
- research article
- Published by Taylor & Francis in International Journal of Environmental Analytical Chemistry
- Vol. 4 (3) , 169-181
- https://doi.org/10.1080/03067317608071112
Abstract
A comparison of ESCA with wet chemical and other analytical techniques has demonstrated agreement within about a factor of 2 for sulfate and carbon but gave much larger deviations for nitrate and ammonium in analysis of atmospheric particulate samples collected in California's South Coast Basin. Analyses for nitrate and ammonium were low by a factor of 5 to 10 relative to the wet chemical methods. Loss of volatile ammonium- and nitrate-containing materials under the high vacuum and localized X-ray beam-induced heating conditions of ESCA was the most reasonable explanation of the discrepancy. Detailed temperature programmed ESCA studies support this conclusion and suggest the significance of highly volatile nitrate (e.g. nitric acid) and ammonium compounds in the atmospheric particles.Keywords
This publication has 12 references indexed in Scilit:
- Formation of pollution particulate nitrogen compounds by NO-soot and NH3-soot gas-particle surface reactionsAtmospheric Environment (1967), 1975
- Determination of the chemical states of sulfur in ambient pollution aerosols by X-ray photoelectron spectroscopyAtmospheric Environment (1967), 1974
- Chemical composition of Pasadena aerosol by particle size and time of day. IV. Carbonate and noncarbonate carbon contentJournal of Colloid and Interface Science, 1972
- Chemical composition of Pasadena aerosol by particle size and time of day. III. Chemical states of nitrogen and sulfur by photoelectron spectroscopyJournal of Colloid and Interface Science, 1972
- Electron Spectroscopy - A Potentially Useful Tool for Environmental StudiesInternational Journal of Environmental Analytical Chemistry, 1972
- Analysis of Trace Metal Particulates in Atmospheric Samples Using X-Ray FluorescenceJournal of the Air Pollution Control Association, 1971
- Nuclear methods in air and water pollution analysisEnvironmental Science & Technology, 1969
- Determination of sulphur and sulphate by titration with barium perchlorate : Comparison of various colour indictorsAnalytica Chimica Acta, 1967
- Size distribution of sulfur-containing compounds in urban aerosolsJournal of Colloid Science, 1965
- The Entropies of Nitric Acid and its Mono- and Tri-hydrates. Their Heat Capacities from 15 to 300°K. The Heats of Dilution at 298.1°K. The Internal Rotation and Free Energy of Nitric Acid Gas. The Partial Pressures over its Aqueous SolutionsJournal of the American Chemical Society, 1942