Abstract
The preparation of a bovine liver candidate reference material and the steps are taken to confirm its homogeneity, long and short term stabilities, and consensus values are described. Details of the sample preparation and the final collaborative exercise are presented. The material elemental composition was characterized by 17 elements (As, Ca, Cd, Co, Cu, Fe, K, Mg, Mo, Mn, Na, P, Pb, Se, Sr, V, and Zn) of nutritional and toxicological significance.
Highlights
Ten separated vials were statistically evaluated, using analysis of variance (ANOVA) with single factor, where the F-critical was compared to Fcalculated to determine the homogeneity of the available material
The single factor analyses of variance (ANOVA) results with a significance level of 5% (α = 0.05) to check the short-term stability
The long-term stability data were evaluated during 12 months, and the single factor ANOVA with a significance level of 5% (α = 0.05) and no significant differences were found in the samples (Fcritic > F anal)
Summary
These analyze call for the need for development and validation of Brazil is one of the largest exporters of beef cattle analytical methods able to determine such in the world. With the view to attempting to fill some of the gaps, there is a need to contribute to the technological development of the country, increasing the availability of new reference material in various areas have become targets of researchers and institutions [5,6]. In this context, the preparation and characterization of a bovine liver candidate reference material were performed, according to with ISO series 30-35
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