کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10559682 969665 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Uncertainty in spectrophotometric analysis-“Error propagation break up”, a novel statistical method for uncertainty management
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Uncertainty in spectrophotometric analysis-“Error propagation break up”, a novel statistical method for uncertainty management
چکیده انگلیسی
In this work, is given the Combined Standard Uncertainty (CSU) calculation procedure, which can be applied in spectrophotometric measurements. For the assessment of the computations, different approaches are discussed, such as the contribution to the Combined Standard Uncertainty of the reproducibility, the repeatability, the total bias, the calibration curve, and the type of the measurand. Results of inter-laboratory measurements confirmed the assumptions. For the minimization of the errors propagation a controlled experimental procedure was applied by this laboratory, called “errors propagation break-up” (ERBs). The uncertainty of sample concentration from a reference curve dominates the Combined Standard Uncertainty. The contribution of the method and the laboratory bias (total bias) to the CSU is insignificant under controlled conditions of a measurement. This work develops a simple methodology that can be utilized to evaluate the uncertainty and errors control on routine methods used both by academic researchers or the industrial sector.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 85, Issue 5, 15 October 2011, Pages 2385-2390
نویسندگان
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