Sample concentrator tube having heat-resistant planar heating element adhered thereto, analysis device comprising same, and analysis method using same

Abstract

A sample concentrator tube having a heat-resistant planar heating element adhered thereto, an analysis device comprising the same, and an analysis method using the same, according to the present invention, have an effect capable of precisely controlling the temperature by heating the sample concentrator tube uniformly and rapidly to a target temperature for desorption, and of desorbing an adsorbed sample almost simultaneously in any part of an adsorbent by minimizing the local temperature difference of the adsorbent in the tube. In addition, it is possible to minimize chemical noise by preventing thermal denaturation of the adsorbent caused by overheating, and there is an advantage of excellent reproducibility as well as an effect of being inexpensive, economical, and excellent in energy efficiency.

Description

technical field [0001] The present invention relates to a sample concentration tube bonded with a heat-resistant planar heating element, an analysis device including the same, and an analysis method using the same. Background technique [0002] In general, the methods of measuring gas samples in the air mostly use analytical equipment such as gas chromatography (Gaschromatography, GC) and mass spectrometer (Mass spectrometer, MS), but in the case of extremely small amounts of gas, due to the detection of limit, and there are problems that are difficult to measure. [0003] Therefore, various studies for improving the sensitivity of the detector sensor itself have been conducted. However, when the sensitivity exceeds a certain level, it is easily affected by the outside world, so the noise inevitably increases. In order to solve the above-mentioned problems, a sample concentrator for concentrating a low-concentration sample to a high-concentration sample is used in a high-s...

AI Technical Summary

Problems solved by technology

In particular, although a short thermal desorption time and a high temperature rise rate are required for efficient analysis, it is necessary to prevent the problem of adsorbent denaturation due to thermal shock applied to the adsorbent by overheating

For example, when too high heat is applied to the adsorbent, the adsorbent or the adsorbed substance is denatured so that the analysis of the adsorbed substance cannot be normally performed

[0006] Existing sample concentrators have been developed with a structure in which a heating wire is wound around the outer surface of a tube for storing a sample. When heating is performed for sample desorption, the heating wire expands linearly and the adhesion to the tube decreases. Therefore, it is difficult to control the sample temperature accurately in practice, and there are limitations in effectively transferring heat to the concentrator tube

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