Uncertainty Assessment of Carbon Monoxide in Exhaust Gas Based on Fixed Potential Electrolysis

DOI: https://doi.org/10.62517/jsse.202408205

Author(s)

Xiaowen Kang1,2,3, Zhenxing Li1,2,3,*,Wenqian Pan1,2,3

Affiliation(s)

1Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou, China 2Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Guangzhou, China 3Guangdong Provincial Engineering Research Center for Ambient Mass Spectrometry, Guangzhou, China. *Corresponding Author.

Abstract

In order to ensure the accuracy and reliability of the test results, the carbon monoxide content in the waste gas of fixed pollution sources was used on the field data. By explaining the steps and principles of the field operation, Establishing a mathematical model for the uncertainty of the carbon monoxide content in the exhaust gas, the main sources of the uncertainty components are analyzed, and the uncertainty assessment of class A and class B is passed. The results show that the main sources of uncertainty components include repetitive measurement, instrument value error and CO standard gas, which are 4.15%, 0.982% and 1.15% respectively; the extended uncertainty is ± 10 (k=2). The results show that under the condition of ensuring the stability of the process emission, increasing the number of field measurement is the key to reduce the uncertainty, which is conducive to improving the quality level of the fixed source waste gas monitoring data.

Keywords

Carbon Monoxide; A Uncertainty; B Uncertainty; Potential Method

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