Method for detecting chromatographic column polluted by high-concentration sample in real time and detection equipment

Abstract

The invention relates to a method for detecting a chromatographic column polluted by a high-concentration sample in real time and detection equipment. The invention aims to solve the problem that in the prior art, a chromatographic column is polluted by a high-concentration sample, so that the later sample cannot be normally detected or the detection value is inaccurate. The method comprises the steps of acquiring, conditioning, converting and calculating a signal, and analyzing the acquired signal to control the heating of the chromatographic column and the opening and closing of an air passage in a corresponding state. The method has the advantages that high-concentration automatic detection is achieved, and subsequent sample analysis accuracy caused by the fact that the chromatographiccolumn is polluted by the high-concentration sample is prevented; different signals generated by different manufacturers and different types of chromatograms can be processed and converted, so that real-time detection is achieved; and when high-concentration pollution is detected, the other functions of a sample injector except purging are frozen, and the problem of cross contamination of pipelines of the sample injector is solved.

Description

technical field [0001] The invention relates to the field of sample detection equipment, in particular to a method and detection equipment for real-time detection of contamination of a chromatographic column carrying high-concentration samples. Background technique [0002] Gas chromatographic column means that the gas is brought in by the carrier gas, through the chromatographic column with different retention properties for the components in the mixture to be detected, the components are separated, and the components are sequentially introduced into the detector to obtain the detection signal of each component. According to the order of importing into the detector, after comparison, the components can be distinguished, and the content of each component can be calculated according to the peak height or peak area. Chromatography uses a chromatographic column to separate the mixture first, and then uses a detector to sequentially detect the separated components. In this type...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem in the prior art that the samples cannot be detected normally or the detected values ​​are inaccurate due to the contamination of the chromatographic column by high-concentration samples when gas chromatography is used in the prior art

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