Bubble column apparatus for gas-liquid heterogeneous chemistry studies
Article Abstract:
A bubble column apparatus has been designed to study the interaction of heterogeneous elements such as gas and liquids. The set-up aims to show the mechanisms for the chemical transformation of atmospheric gases to liquids. It features a low-pressure gas flow that carries helium gas to a flask containing temperature-controlled liquid. Gas is introduced to the liquid phase via a computer-controlled bubble injector. The uptake of gas is measured and compared with droplet experiments. The procedure, equations and principles in modeling the gas uptake are discussed.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Measurement technique for inorganic chlorine gases in the marine boundary layer
Article Abstract:
A newly-developed method for measuring inorganic chlorine gases in the marine boundary layer was presented. The technique involves the removal of coarse and fine aerosol and the use of a trace gas concentrator in an acidic mist chamber. Ion chromatography was used to analyze mist solutions. The detection limits of the technique were estimated to be approximately 39 pptv for HCl and 13 pptv for Cl2.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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Chemical amplifiers for detection of peroxy radicals in the atmosphere
Article Abstract:
Ethene, propene, ethanol and dimethyl ether were modeled as a series of alternative chain-carrying agents. The rection of these chemicals were used to initiate a chemical amplification system and tested as a monitor for peroxy radicals in the atmosphere. It was found that all the systems performed better than carbon dioxide as chain-carrying agents. However, weaknesses were also assessed.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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