Molar fraction stability in dynamic preparation of reference trace gas mixtures
IET Science, Measurement & Technology(2016)
摘要
Volatile Organic Compounds (VOC) at trace level are common indicators for climate change and ambient air quality. The calibration of detection systems at trace level needs VOC mixtures at nmol/mol level with 5% uncertainty, the dynamic preparation can fulfil it. A source of uncertainty for dynamic generation is the stability of the VOC molar fraction averaged on the sampling time. A general method...
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关键词
gas mixtures,gas sensors,measurement uncertainty,organic compounds
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