Gaseous Iodine Measurements and Their Relationship to Particulate Lead in a Polluted Atmosphere
- 1 January 1971
- journal article
- Published by American Meteorological Society in Journal of the Atmospheric Sciences
- Vol. 28 (1) , 95-98
- https://doi.org/10.1175/1520-0469(1971)028<0095:gimatr>2.0.co;2
Abstract
Gaseous iodine and particulate iodine and lead samples were collected simultaneously in a polluted atmosphere using activated charcoal and membrane filters. Concentrations of gaseous iodine varied from 10–18 ng m−3 and particulate iodine from 2–15 ng m−3 as determined by neutron activation analysis. The total iodine concentration found in this work is approximately twice that found in the unpolluted marine atmosphere. Lead concentrations varied from 0.4–3.7 µg m−3 as determined by atomic absorption spectrophotometry. There is an apparent relationship between the concentration of total particulate matter in the air and the ratio of particulate iodine to gaseous iodine. This relationship is consistent with laboratory investigations of gaseous I2 adsorption onto combustion aerosols reported by other investigators. Calculations indicate that the concentrations of gaseous iodine measured in this work should be sufficient to activate all lead containing particles to ice nuclei in a polluted atmosphere.... Abstract Gaseous iodine and particulate iodine and lead samples were collected simultaneously in a polluted atmosphere using activated charcoal and membrane filters. Concentrations of gaseous iodine varied from 10–18 ng m−3 and particulate iodine from 2–15 ng m−3 as determined by neutron activation analysis. The total iodine concentration found in this work is approximately twice that found in the unpolluted marine atmosphere. Lead concentrations varied from 0.4–3.7 µg m−3 as determined by atomic absorption spectrophotometry. There is an apparent relationship between the concentration of total particulate matter in the air and the ratio of particulate iodine to gaseous iodine. This relationship is consistent with laboratory investigations of gaseous I2 adsorption onto combustion aerosols reported by other investigators. Calculations indicate that the concentrations of gaseous iodine measured in this work should be sufficient to activate all lead containing particles to ice nuclei in a polluted atmosphere....Keywords
This publication has 0 references indexed in Scilit: