| Ultrasonic detector for high precision measurements of carbon dioxide. | |
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MedLine Citation:
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PMID: 20822160 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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A new instrument for monitoring atmospheric CO(2) has been developed based on the measurement of the speed of sound in air. The instrument uses a selective scrubber to yield highly precise and accurate measurements of CO(2) mixing ratios at ambient concentrations. The instrument has a precision of 0.3 ppmv (1σ) with a signal that is independent of pressure and requires a flow rate of only 30 mL/min. Laboratory measurements of atmospheric CO(2) showed excellent agreement with values obtained by nondispersive infrared absorption. The instrument has the advantage of collecting continuous, high-precision data every 25 s and can be modified for vertical profiling studies using kites, balloons, or light aircraft for the purpose of measuring landscape-scale fluxes. |
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Authors:
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Peter C Andersen; Craig J Williford; Donald E David; John W Birks |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Analytical chemistry Volume: 82 ISSN: 1520-6882 ISO Abbreviation: Anal. Chem. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-30 Completed Date: 2011-01-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370536 Medline TA: Anal Chem Country: United States |
Other Details:
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Languages: eng Pagination: 7929-34 Citation Subset: - |
Affiliation:
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2B Technologies, Inc., 2100 Central Ave., Suite 105, Boulder, Colorado 80301, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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