Uncertainty Evaluation of 16 Volatile Organic Compounds in Indoor Environment by Gas Chromatography
The 16 volatile organic compounds in indoor environment(TVOC)were determined by gas chromatography.The uncertainties in the test process were discriminated and evaluated.According to the source,measurement repeatability uncertainty was evaluated by class A,while sampling volume,preparation of standard solution and fitting standard curve were evaluated by class B.The standard uncertainty and expanded uncertainty are calculated.The concentration of indoor environment TVOC is(16.806±2.336)mg/m3,k=2,expanded uncertainty is 13.9%.The main uncertainty component comes from the fitting of standard curve.
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