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Measurement of stable isotopes of atmospheric H2 and its application to atmospheric photochemistry

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Title
Measurement of stable isotopes of atmospheric H2 and its application to atmospheric photochemistry
Other Titles
대기중 수소의 안정동위원소측정과 대기광화학에 응용
Authors
T. Roeckmann
C.A.M. Brenninkmeijer
Rhee, Tae Siek
Keywords
atmosphere; formadehyde; hydrogen; isotope; photochemistry
Issue Date
2007
Citation
T. Roeckmann, C.A.M. Brenninkmeijer, Rhee, Tae Siek. 2007. Measurement of stable isotopes of atmospheric H2 and its application to atmospheric photochemistry. 대한화학회. 대한화학회. 2007.10.17~.
Abstract
We developed a method to analyze stable isotope ratio of atmospheric H2.The method requires only ~300 ml of air, is operated in an on-line system, and yields values within 2 per mil of precision, which is better than that obtained by conventional off-line method with ~ 4000 l of air. However, because of different peak shapes of reference and sample air, it needs to calibrate the analytical system in a regular manner. We used the system to determine kinetic isotope effects occurring during the photolysis of formaldehyde in the atmosphere. In the presentation we will discuss in detail determination of kinetic isotope effects under the ambient conditions for the photolysis of formaldehyde.
URI
http://repository.kopri.re.kr/handle/201206/7765
Conference Name
대한화학회
Conference Place
대한화학회
Conference Date
2007.10.17~
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