Glossary - Agilent Technologies G1289 Operating Manual

Glossary

accuracy The difference between a measured quantity and its true value
analyte The compound of interest in an analysis
calibration curve A graph showing the relationship between the amount of a
compound and its response from an analytical technique. In gas
chromatography, that response is the peak area.
carrier gas The gas that flows through the chromatographic column and
moves the sample components when they are not retained by the stationary
phase.
chromatographic column A tube (e.g. of glass, stainless–steel or plastic)
generally cylindrical, containing the stationary phase and provided with an
inlet and an outlet for the mobile phase
chromatography A separation method in which the sample components'
different affinities toward two phases, one of which is immobile (the stationary
phase) and the other which moves (the mobile phase), are taken advantage of
column See chromatographic column
constant heating mode In HS sampling, a setting which heats the contents of
each sample vial for an identical length of time for each extraction
distribution coefficient See partition coefficient
elastomeric displaying elastic qualities similar to rubber
Electron Capture Detector (ECD) A gas phase detector that uses a
radioactive source and detects a component by its ability to capture low–
energy electrons
eluate The material exiting a column in chromatography
equilibrium In HS sampling, the point at which molecules diffuse out of the
sample into the headspace at the same rate at which they diffuse from the
headspace back into the sample
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