noise #01480
noise #01480
Althoug long-term noise can occur at any time 01 during an analysis, it can be mistaken for a late-eluting peak. Earlier eluting peaks are usually sharper and less easily confused with long-term noise.
reference: R112:1994 2.8
ID: 01480
a measure of variation in the detector signal; it can be divided into three components:
- short-term noise includes all observable random variations of the detector signal having a frequency of the order of 10–2 Hz to 10–1 Hz (one or more cycles per lo minute) and should be measured peak to peak
- long-term noise includes all observable random variations of the detector signal with frequencies between 0.1 Hz and 1.0 Hz
- drift is the average slope of the baseline signal measured over a minimum period of one-half hour.
Broader Terms
- BT↑ OIML
