Methodology validation for evaluation of the uncertainty in the calibration curves better adjusted for second-degree polynomials

Química Nova

Aguiar, Paula Fernandes de¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil¹  Oliveira, Elcio Cruz de¹  PETROBRAS TRANSPORTE S.A.¹ 

关键词: second order calibration uncertainty;    Monte Carlo Simulation;    GUM Supplement.;   

DOI  :  10.1590/S0100-40422009000600041

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The most widespread literature for the evaluation of uncertainty - GUM and Eurachem - does not describe explicitly how to deal with uncertainty of the concentration coming from non-linear calibration curves. This work had the objective of describing and validating a methodology, as recommended by the recent GUM Supplement approach, to evaluate the uncertainty through polynomial models of the second order. In the uncertainty determination of the concentration of benzatone (C) by chromatography, it is observed that the uncertainty of measurement between the methodology proposed and Monte Carlo Simulation, does not diverge by more than 0.0005 unit, thus validating the model proposed for one significant digit.

【 授权许可】

Unknown