Detection of Trace Constituents by Gas Chromatography. Analysis of Polluted Atmosphere

Valence and Ionic Lowest-Lying Electronic States of Isobutyl Formate Studied by High-Resolution Vacuum Ultraviolet Photoabsorption, Photoelectron Spectroscopy, and Ab Initio Calculations

“…9 Isobutyl formate has also been found as a trace constituent of Los Angeles smog. 10 Although this compound has been in use for many years, and its presence in the atmosphere has been documented, very little information on the structure of this molecule can be found in the literature. The very first infrared (IR) spectroscopic studies revealed the vibrational structure of isobutyl formate.…”

Air Pollution

“…He derived equations governing column performance in such a form as to permit exact duplication of retention times and plate numbers from one column to the next. Two different systems were reported for the concentration of gaseous pollutants and their subsequent chromatographic separation (101,378). A system specifically suited to the determination of methane in air was reported (202).…”

Gas Chromatography

“…Special requirements for trace analysis by GC were discussed by Jones (122) with particular reference to the use of conventional equipment. An ionization detector was used by Farrington et al (74) to study polluted atmospheres. The removal of water from air samples wfithout loss of oxygenated compounds was carefully investigated by these workers.…”