ISO 11843-7:2018
2018-09
ISO 11843-7:2018
Résumé
Background noise exists ubiquitously in analytical instruments, whether or not a sample is applied to the instrument. This document is concerned with mathematical methodologies for estimating the minimum detectable value in case that the most predominant source of measurement uncertainty is background noise. The minimum detectable value can directly and mathematically be derived from the stochastic characteristics of the background noise.
This document specifies basic methods to
— extract the stochastic properties of the background noise,
— use the stochastic properties to estimate the standard deviation (SD) or coefficient of variation (CV) of the response variable, and
— calculate the minimum detectable value based on the SD or CV obtained above.
The methods described in this document are useful for checking the detection of a certain substance by various types of measurement equipment in which the background noise of the instrumental output predominates over the other sources of measurement uncertainty. Feasible choices are visible and ultraviolet absorption spectrometry, atomic absorption spectrometry, atomic fluorescence spectrometry, luminescence spectrometry, liquid chromatography and gas chromatography.
Informations générales
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État actuel: PubliéeDate de publication: 2018-09Stade: Norme internationale à réviser [90.92]
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Edition: 2
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Comité technique :ISO/TC 69/SC 6
- RSS mises à jour
Prochaine édition en cours d'élaboration
ISO/DIS 11843-7
ISO/DIS 11843-7
Capacité de détection
Partie 7: Méthodologie basée sur les propriétés stochastiques du bruit instrumental
ISO/DIS 11843-7
Cycle de vie
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Précédemment
AnnuléeISO 11843-7:2012
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Actuellement
PubliéeISO 11843-7:2018
Les normes ISO sont réexaminées tous les cinq ans
Stade: 90.92 (Sera révisée) -
Sera remplacée par
ProjetISO/DIS 11843-7