Abstract
A method for the quantitative evaluation of adsorptive and absorptive wall effects in the analysis of gas traces is presented. It is based on the measurement of the gas phase concentrations in exponential enrichment and dilution. Losses of benzene and nitrogen dioxide at ppb-level are observed due to the interaction of these molecules with various wall materials. There is a great dependence of wall effects on changes in temperature, wall material, and type and concentration of the gas traces. The loss on glass walls decreases at higher temperatures, whereas the opposite effect can be observed on polymer materials. The risk of analytical errors by absorptive and adsorptive wall effects is illustrated, but there is a simple method to recognize these errors. Furthermore, this method can be used for studies of the deposition of gas traces in the environment. (orig.).
Citation Formats
Bachhausen, P, Buchholz, N, and Hartkamp, H.
Wall effects in analysis of gas traces.
Germany: N. p.,
1985.
Web.
Bachhausen, P, Buchholz, N, & Hartkamp, H.
Wall effects in analysis of gas traces.
Germany.
Bachhausen, P, Buchholz, N, and Hartkamp, H.
1985.
"Wall effects in analysis of gas traces."
Germany.
@misc{etde_6208246,
title = {Wall effects in analysis of gas traces}
author = {Bachhausen, P, Buchholz, N, and Hartkamp, H}
abstractNote = {A method for the quantitative evaluation of adsorptive and absorptive wall effects in the analysis of gas traces is presented. It is based on the measurement of the gas phase concentrations in exponential enrichment and dilution. Losses of benzene and nitrogen dioxide at ppb-level are observed due to the interaction of these molecules with various wall materials. There is a great dependence of wall effects on changes in temperature, wall material, and type and concentration of the gas traces. The loss on glass walls decreases at higher temperatures, whereas the opposite effect can be observed on polymer materials. The risk of analytical errors by absorptive and adsorptive wall effects is illustrated, but there is a simple method to recognize these errors. Furthermore, this method can be used for studies of the deposition of gas traces in the environment. (orig.).}
journal = []
volume = {322:3}
journal type = {AC}
place = {Germany}
year = {1985}
month = {Oct}
}
title = {Wall effects in analysis of gas traces}
author = {Bachhausen, P, Buchholz, N, and Hartkamp, H}
abstractNote = {A method for the quantitative evaluation of adsorptive and absorptive wall effects in the analysis of gas traces is presented. It is based on the measurement of the gas phase concentrations in exponential enrichment and dilution. Losses of benzene and nitrogen dioxide at ppb-level are observed due to the interaction of these molecules with various wall materials. There is a great dependence of wall effects on changes in temperature, wall material, and type and concentration of the gas traces. The loss on glass walls decreases at higher temperatures, whereas the opposite effect can be observed on polymer materials. The risk of analytical errors by absorptive and adsorptive wall effects is illustrated, but there is a simple method to recognize these errors. Furthermore, this method can be used for studies of the deposition of gas traces in the environment. (orig.).}
journal = []
volume = {322:3}
journal type = {AC}
place = {Germany}
year = {1985}
month = {Oct}
}