Norm

ISO 11843-7:2012 en

Capability of detection - Part 7: Methodology based on stochastic properties of instrumental noise

73,12

Over deze norm

Status Definitief
Aantal pagina's 17
Commissie Toepassing van statistische methoden
Gepubliceerd op 01-06-2012
Taal Engels
Background noise exists ubiquitously in analytical instruments, whether or not a sample is applied to the instrument. This part of ISO 11843 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. It 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 part of ISO 11843 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.

Details

ICS-code 03.120.30
17.020
Engelse titel Capability of detection - Part 7: Methodology based on stochastic properties of instrumental noise
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