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Critical metrological evaluation of fuel analyses by measurement uncertainty

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Języki publikacji
EN
Abstrakty
EN
It is now widely recognized that the evaluation of the uncertainty associated with a result is an essential part of any quantitative analysis. One way to use the estimation of measurement uncertainty as a metrological critical evaluation tool is the identification of sources of uncertainty on the analytical result, knowing the weak steps, in order to improve the method, when it is necessary. In this work, this methodology is applied to fuel analyses and the results show that the relevant sources of uncertainty are: beyond the repeatability, the resolution of the volumetric glassware and the blank in the analytical curve that are little studied.
Rocznik
Strony
235--247
Opis fizyczny
Bibliogr. 29 poz., rys., tab., wzory
Twórcy
Bibliografia
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  • [3] International Organization for Standardization (ISO). (1993). Guide to the Expression of Uncertainty in Measurement. ISO: Geneva. Switzerland.
  • [4] ABNT NBR 13992. (2008). Motor gasoline - Determinations of fuel anhydrous ethylic alcohol content.
  • [5] ABNT NBR 13993. (2002). Ethylic Alcohol – Determination of hydrocarbons content.
  • [6] ASTM D95 - 05. (2010). Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation. ASTM American Society for Testing and Materials.
  • [7] ASTM D56 - 05. (2005). Standard Test Method for Flash Point by Tag Closed Cup Tester. ASTM American Society for Testing and Materials.
  • [8] ASTM D4294 (2010). Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry. ASTM American Society for Testing and Materials.
  • [9] ISO/IEC Guide 99-12:2007. (2007). International Vocabulary of Metrology. Basic and General Concepts and Associated Terms. International Organization for Standardization: Geneva. Switzerland.
  • [10] Analytical Methods Committee. (1995). Analyst, 120, 2303-2008.
  • [11] White, R. (2011). The meaning of measurement in metrology. Accred. Qual. Assur., 16, 31-41.
  • [12] ISO 3534-2:2006. (2006). Statistics - Vocabulary and Symbols - Part 2: Probability and general statistical terms. International Organization for Standardization: Geneva. Switzerland.
  • [13] Rösslein, M., Rezzonico, S., Hedinger, R., Wolf, M. (2007). Repeatability: some aspects concerning the evaluation of the measurement uncertainty. Accred. Qual. Assur., 12, 425-434.
  • [14] Willink, R. (2009). The role of the sample standard deviation in the analysis of measurement data. Accred. Qual. Assur., 14, 353-358.
  • [15] Zieba, A. (2010). Effective number of observations and unbiased estimators of variance for autocorrelated data - an overview. Metrology and Measurement Systems, 17(1), 3-16.
  • [16] Lisowski, M. (2009). Issues of volume resistivity measurement of flat dielectric specimens and evaluation on uncertainty of the measurement results by approximate method at confidence level of 0.95. Metrology and Measurement Systems, 16(2), 233-248.
  • [17] Meyer, V.R., Pfohl, J., Winter, B. (2010). Calibration, handling repeatability, and the Maximum Permissible Error of single-volume glass instruments. Accred. Qual. Assur., 15, 715-718.
  • [18] Oliveira, E.C., Aguiar, P.F. (2009). Methodology validation for evaluation of the uncertainty in the calibration curves better adjusted for second-degree polynomials. Quim. Nov, 32, 1655-1660.
  • [19] Miller, J.N., Miller, J.C. (2005). Statistics and chemometrics for analytical chemistry. New York.
  • [20] Miller, J.N. (1991). Basic statistical methods for Analytical Chemistry. Part 2. Calibration and regression methods. A review. Analyst, 116, 3-14.
  • [21] Vandeginste, B.G.M., Massart, D.L., Buydens, L.M.C., Jing, S., Lewi, P.J., Smeyers-Verbek, J. (1998). Handbook of Chemometrics and Qualimetrics. Part B. Elsevier. Amsterdam. Netherlands.
  • [22] Jiménez-Chacón, J., Alvarez-Prieto, M. (2010). An approach to detection capabilities estimation of analytical procedures based on measurement uncertainty. Accred. Qual. Assur., 15, 19-28.
  • [23] Chuí, Q.S.H. (2007). Uncertainties related to linear calibration curves: a case study for flame atomic absorption spectrometry. J. Braz. Chem. Soc., 18, 424-430.
  • [24] Catelani, M., Zanobini, A., Ciani, L. (2010). Uncertainty interval evaluation using the Chi-square and Fisher distributions in the measurement process. Metrology and Measurement Systems, 17(2), 195-204.
  • [25] Doz, M.B.G., Bonatti, C.M., Sólimo, H.N. (2004). Water Tolerance and Ethanol Concentration in Ethanol-Gasoline Fuels at Three Temperatures. Energy Fuels, 18, 334-337.
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  • [28] Liaw, H., Gerbaud, V., Chiu, C. (2010). Flash point for ternary partially miscible mixtures of flammable solvents. J. Chem. Eng. Data, 55, 134-146.
  • [29] Kweon, C.-B., Okada, S., Stetter, J.C., Christenson, G. (2003). SAE Technol. Pap. Ser., 01-1899.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BSW1-0079-0006
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