NDLI: Estimação da Incerteza de Medição de um Procedimento Analítico Gravimétrico Aplicado À Hidrossedimentologia Fluvial - Um Exemplo Didático para o Ensino de Metrologia Química nos Cursos Técnico e de Graduação em Química

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Estimação da Incerteza de Medição de um Procedimento Analítico Gravimétrico Aplicado À Hidrossedimentologia Fluvial - Um Exemplo Didático para o Ensino de Metrologia Química nos Cursos Técnico e de Graduação em Química

Content Provider	Semantic Scholar
Author	Pinto, Magda Cristina Ferreira Magalhães, Wagner F.
Copyright Year	2016
Abstract	The measurement uncertainty is fundamental to assess the ‘quality’ of the results of any experiment. The measurement result with the corresponding uncertainty statement ensures its fitness for purpose by giving a measure of the confidence that can be placed on the results. This paper presents a detailed and didactic evaluation of the uncertainties for suspended sediment concentration determined by a gravimetric analytical method by filtration and for the river solid discharge using both the variance propagation law and its particular cases for sums (subtractions) and multiplications (divisions). The sources of uncertainties considered to estimate the uncertainty of the suspended sediment concentration were the weighing (resolution and calibration of the balances), the resolution of the conversion factor, the intermediate precision of the whole analytical procedure and the repeatability precision due to the direct measurements. The major uncertainty contributions for the suspended sediment concentration uncertainty were the intermediate precision and weighing of the samples. DOI: 10.5935/1984-6835.20160058
Starting Page	780
Ending Page	802
Page Count	23
File Format	PDF HTM / HTML
DOI	10.5935/1984-6835.20160058
Volume Number	8
Alternate Webpage(s)	http://rvq-sub.sbq.org.br/index.php/rvq/article/download/1315/778
Alternate Webpage(s)	http://rvq.sbq.org.br/imagebank/pdf/v8n3a17-Supl01.pdf
Alternate Webpage(s)	https://doi.org/10.5935/1984-6835.20160058
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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