Fast Gas Chromatography for Industrial Hygiene Analysis and Monitoring.
School of Public Health, University of Michigan, Ann Arbor, Michigan 1990 Mar:256 pages
Fast gas chromatography systems were developed for use in industrial hygiene and environmental applications. The two systems featured a gas cooled and resistively heated cold trap inlet that produced injection bands with widths of 15 to 25 microseconds. Separation was achieved with 2 to 5 meter lengths of 0.25 millimeter internal diameter capillary column. Flame ionization detectors were used with the detector signal directed to a custom built, fast responding electrometer and a personal computer based data system. One of the systems was designed for the analysis of organic vapors and the other for the analysis of liquids. This study demonstrated that simple liquid mixtures of aromatics and aliphatics could often be separated in 10 seconds or less. During replicate analyses, relative standard deviations for peak areas were 1 to 10%. Relative standard deviations for retention time were less than 1%. Dilute solutions, with concentrations below 50 micrograms/milliliter could not be analyzed due to the poor signal to noise ratios associated with fast responding electrometers.
NIOSH-Grant; Grants-other; Chemical-analysis; Analytical-chemistry; Analytical-methods; Air-quality-monitoring; Chromatographic-analysis;
Environmental & Indust Health School of Public Health II 1420 Washington Heights Ann Arbor, MI 48109-2029
Final Grant Report;
NTIS Accession No.
Other Occupational Concerns; Grants-other;
School of Public Health, University of Michigan, Ann Arbor, Michigan
University of Michigan at Ann Arbor, Ann Arbor, Michigan