Evaluation of Analytical Results

EVALUATION of analytical results In terms of all available Information... 

The Kerridge-Bongard model of information is of great importance in quality assurance, in particular for the assessment of interlaboratory studies. Examples of the information-theoretical evaluation of analytical results within the context of interlaboratory comparisons have been given by Danzer et al. [1987, 2001], Wienke et al. [1991] and Danzer [1993]. 

Evaluation of Analytical Results 8.3.1. F.A. Leuchter/Alpha Analytic Laboratories... 

The final step (interpretation and evaluation of analytical results) should provide the definitive answer to the initial problem, generally stated by a client of the laboratory. If the answer is not satisfactory, the analytical cycle can be repeated, after a change to or adaptation of one or more steps. Sometimes this leads to the development of a new method or the modification of part of the procedure in order, for example, to achieve better separation of certain components or to attain a lower detection limit for specific compounds. 

EVALUATION of analytical results in terms of all available information... 

The pollution of indoor air by volatile organic compounds (VOCs) has for a long time been considered as a hygienic problem, so that systematic investigations have been carried out since the early 1980s. As far as the evaluation of analytical results is concerned, it has to be differentiated strictly between immission and emission. Investigation of indoor... 

Hence, it seems obvious that the evaluation of analytical results should not only consider results obtained with CRMs but also take into consideration the way they have been prepared and used. 

The method s standard deviation (DIN 32645, DIN 38402 T51) represents the key parameter of performance. It is calculated by dividing the residual standard deviation by the sensitivity of the method and it essentially determines the maximum precision for evaluation of analytical results. The standard deviation of a method provides the scale to estimate the accuracy of a method early on the basis of its calibration characteristics. 

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