Evaluation of measurements uncertainty for the moisture and dry matter mass fraction in industrial residues and sludges

Mouro, Filomena C.; Calisto, Sandra C.; Trancoso, Maria Ascensão

http://hdl.handle.net/10400.9/582

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Authors

Mouro, Filomena C.

Calisto, Sandra C.

Trancoso, Maria Ascensão

Abstract(s)

Moisture mass fraction, , and dry matter mass fraction, wOH2wDM,, are analytical parameters required by environmental European regulations. The metrological quality, namely measurement uncertainty, comply the fitness for purpose and enhances the comparability of analytical results. In this work, the component by component approach for measurement uncertainty estimation of and wOH2wDM is reported and the input quantities assessed. The measurement uncertainty of method’s precision, under within-laboratory reproducibility conditions, f(precision)Rw, was the only significant influence quantity when > 0,10 g gOH2w-1 for both ranges. In case of ≤ 0,10 g gOH2w-1, the mass of the capsule containing sample after the drying step, m(C+S)dry, has also a relevant contribution. Simplified models are proposed.

Keywords

Uncertainty Moisture Dry matter Mass fraction

URI

http://hdl.handle.net/10400.9/582

Citation

Mouro, Filomena C.; Calisto, Sandra C.; Trancoso, Maria Ascensão. Evaluation of measurements uncertainty for the moisture and dry matter mass fraction in industrial residues and sludges. Comunicação apresentada ao: XIX IMEKO World Congress: Fundamental and Applied Metrology, Lisbon, 2009, September 6-11, p. 2630-2633