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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Absolute measurement of the abundance of atmospheric carbon monoxide
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Absolute measurement of the abundance of atmospheric carbon monoxide

机译:绝对测量大气中一氧化碳的含量

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摘要

The main aspects of an absolute method for measurement of the mixing ratio of atmospheric carbon monoxide (CO) are presented. The method is based on cryogenic extraction of CO from air after oxidation to CO2 followed by accurate volumetric determination. Gravimetric measurement is used to determine the quantity of sample air processed. In routine operation the overall error can be kept below 1%. Furthermore, the results of a laboratory intercomparison are analyzed. It is shown how offsets in the commonly applied analytical methods can occur and how these can seriously affect results obtained at the low concentration end (< 100 nmole/mole). [References: 29]
机译:介绍了一种用于测量大气一氧化碳(CO)混合比的绝对方法的主要方面。该方法基于氧化成二氧化碳后从空气中低温提取二氧化碳,然后进行准确的体积测定。重量测量用于确定处理的样品空气量。在常规操作中,总误差可保持在1%以下。此外,分析了实验室比对的结果。结果表明,在常用的分析方法中可能会发生偏移,并且这些偏移会严重影响在低浓度端(<100 nmole / mol)获得的结果。 [参考:29]

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