The limit of determination and the limit of nonzero information content

1988 ◽  
Vol 53 (8) ◽  
pp. 1647-1654 ◽  
Author(s):  
Karel Eckschlager
Keyword(s):  
Quantitative Determination ◽  
Systematic Error ◽  
Information Content ◽  
Analytical Method ◽  
Relative Precision ◽  
Limit Of Determination

The limit of nonzero information content, which is the lowest result of quantitative determination that is accurate and precise enough to have nonzero information content, is suggested to serve as the lowest limit of applicability of an analytical method whose results involve a systematic error. The limit of determination at which the relative precision of results is σr = 10% can be used as the lowest limit of applicability of a method whose results are accurate.

Information content of the determinations of the amount of an analyte

1988 ◽  
Vol 53 (12) ◽  
pp. 3021-3028 ◽  
Author(s):  
Karel Eckschlager ◽  
Jiří Fusek
Keyword(s):  
Reference Material ◽  
Information Content ◽  
Analytical Method ◽  
Analytical Signal ◽  
Divergence Measure ◽  
Analytical Results

It is shown how the information content expressed in terms of the extended divergence measure I(r; p, p0) depends on the amount of the component to be determined when homoscedastic and heteroscedastic dependences of the analytical signal on the amount of the analyte are distinguished. The importance of the accuracy is pointed out, with which the amount of the analyte is known in a reference material employed for testing a particular analytical method. Rules are set, the maintaining of which is aimed at avoiding the origin of null information content of analytical results.

Validation of an analytical method for the quantitative determination of selenium in bacterial biomass by ultraviolet–visible spectrophotometry

2018 ◽  
Vol 255 ◽  
pp. 182-186 ◽  
Author(s):  
Ana Paula Mörschbächer ◽  
Anja Dullius ◽  
Carlos Henrique Dullius ◽  
Cassiano Ricardo Bandt ◽  
Daniel Kuhn ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Analytical Method ◽  
Bacterial Biomass ◽  
Visible Spectrophotometry

Quantitative Determination of Coumestrol in Dried Alfalfa and Alfalfa Leaf Protein Concentrates Containing Chlorophyll

1975 ◽  
Vol 58 (5) ◽  
pp. 983-986
Author(s):  
Benny E Knuckles ◽  
Raymond E Miller ◽  
E M Bickoff
Keyword(s):  
Quantitative Determination ◽  
Analytical Method ◽  
Leaf Protein ◽  
Improved Method ◽  
Alcohol Extract ◽  
Protein Concentrates ◽  
Coefficients Of Variation ◽  
Lower Standard ◽  
Alfalfa Leaf

Abstract An improved analytical method for the determination of coumestrol in dried alfalfa and leaf protein concentrates is described. In this method, chlorophyll is removed from an alcohol extract prior to the paper chromatographic-fluorometric measurement of coumestrol. Ninety-eight per cent of the coumestrol added to alfalfa leaf protein concentrates is recovered by this method. This improved method gives replicate values with lower standard deviations and coefficients of variation than the literature method.

scholarly journals Padrões analíticos e determinação quantitativa de esteviosídeos

1985 ◽  
Vol 7 (7) ◽  
pp. 49
Author(s):  
Frida Maciel Pagliosa ◽  
Maria Cladis Mezzomo da Silva ◽  
Maria Elisabeth do Canto Vinadé ◽  
Sonia Maria Bittencourt Frizzo
Keyword(s):  
Quantitative Analysis ◽  
Quantitative Determination ◽  
Maximum Absorption ◽  
Relative Precision ◽  
Analytical Error

It was established analytical parameters for steviosides standard, besides the obtainment and purification of theses paramters. The metodology for quantitative determination was proposed for the stevioside analysis in spectrofotometry U.V. The quantitative analysis by spectrofotometry was in 208nm, in ethilic alcool. The curve of calibration presented good relative precision, with analytical error 1.5%. The parameters established in caracterization of standars was: m.p: 197-200 ºC; Rf around of 0.58; maximum absorption in 208nm and molar absortivity higher 4000 in 208nm.

scholarly journals Validation of a Spectrophotometric Analytical Method for the Quantitative Determination of Adrenaline in Injectable Pharmaceutical Formulations

2021 ◽  
Vol 9 (1) ◽  
pp. 40-45
Author(s):  
Carlos Montaño-Osorio ◽  
Dalia Bonilla-Martínez ◽  
Martha Angélica Villegas-González ◽  
Adolfo Eduardo Obaya Valdivia
Keyword(s):  
Quantitative Determination ◽  
Analytical Method ◽  
Pharmaceutical Formulations
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