A Sensitive Technique for the Rapid Measurement of Carbon Dioxide Concentrations | Zendy

M. D. Clegg | Zendy; Charles Y. Sullivan | Zendy; Jerry D. Eastin | Zendy

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A Sensitive Technique for the Rapid Measurement of Carbon Dioxide Concentrations

Author(s) -

M. D. Clegg,

Charles Y. Sullivan,

Jerry D. Eastin

Publication year - 1978

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.62.6.924

Subject(s) - carbon dioxide , gas analyzer , spectrum analyzer , gas analysis , analytical chemistry (journal) , respiration , photosynthesis , chemistry , infrared , environmental science , environmental chemistry , botany , optics , biology , physics , biochemistry , organic chemistry

A method has been developed to measure concentrations of CO(2) in gases rapidly. A gas sample is injected into a flowing carrier gas that passes through an infrared CO(2) analyzer. A strip chart recorded peak response is obtained which is proportional to the CO(2) concentration. A resolution of better than 2 microliters of CO(2) per liter of gas was obtained. Seven to 10 seconds were required for sample analysis once the sample was obtained. Sorghum bicolor plant respiration was determined at different temperatures by measuring CO(2) using this system and by using a conventional system. The correlation between techniques was 0.996, and about the same variation occurred within each method. This technique greatly increased the efficiency of the infrared CO(2) analyzer in our laboratory for use in plant respiration and photosynthetic studies.

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