Air Pollution Foundation Second Technical Progress Report

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Previous studies of the isotope ratio C13/C12 of carbon in coal, petroleum, wood, and atmospheric carbon dioxide showed a variability which reflected both natural and man-made activities. Mass Spectrometry - Carbon Isotope Study Introduction - A study of carbon isotopes in the Los Angeles atmosphere is being performed by Professor S. Epstein at the California Institute of Technology under a research grant from the Air Pollution Foundation. For example, the C13/C12 ratio of carbon in coal and oil is different from that in atmospheric CO2. Therefore, burned carbonaceous material may be expected to affect this ratio. Therefore, a study of these ratios in carbon dioxide found in the Los Angeles atmosphere seems pertinent to an understanding of the processes taking place therein.

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