Smallest detectable partial pressure ratio

Smallest detectable partial pressure ratio (concentration)... 

The smallest detectable partial pressure is defined as a ratio of noise amplitude to sensitivity ... 

Detection limit. The detection limit of an instrument should be differentiated from its sensitivity. The detection limit reflects the smallest flow of sample or the lowest partial pressure that gives a signal that can be distinguished from the background noise. One must specify the experimental conditions used and give the value of signal-to-noise ratio corresponding to the detection limit. 

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See also in sourсe #XX -- [ ]

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