detector

gas chromatographydetectorIt is a device that converts the signal of the substance flowing out from the chromatographic column into an electrical signal.

detectorAccording to different signal recording methods, it can be divided into differential typesdetectorAnd integral typedetectorIntegral typedetectorIt measures the total accumulation of each component, and the response value is proportional to the total mass of the component. The chromatogram is a stepped curve, and the step height represents the total amount of the component. Differential typedetectorThe response is proportional to the concentration or mass of the outflowing component, and the plotted chromatographic peaks are a series of peaks.

Classify according to different detection principles and gas chromatography based on different detection principlesdetectorIt can also be divided into concentration typedetectorAnd quality typedetector. Concentration typedetectorThe measurement is the instantaneous change in concentration of a certain component in the carrier gas, that isdetectorThe response value is directly proportional to the concentration of the components. Like thermal conductivitydetectorAnd electronic capturedetectorQuality orienteddetectorThe measurement is the entry of a certain component in the carrier gas per unit timedetectorThe change in content, i.edetectorResponse value and unit time entrydetectorThe amount of a certain component is proportional.Classify based on different responses to the tested substance. Gas chromatography is used to analyze the response to the tested substancedetectorIt can also be divided into universal typesdetectorAnd selectivitydetector.