A ceramic heating adsorption-thermal desorption device

Abstract

The invention discloses a ceramic heating adsorption-thermal desorption apparatus. The ceramic heating adsorption-thermal desorption apparatus comprises a supporting cavity, a ceramic heating core, acooling jacket, a sample inlet / outlet interface and a sealing link assembly. The supporting cavity is filled with an adsorption agent, the type and the capacity of an adsorption material can be freelyselected according to the requirement, the ceramic heating core is located on the center of the adsorption agent, the heating speed is high, the heat is uniform, the temperature can be adjusted from0 to 400 DEG C, the cooling jacket is attached to the supporting cavity, when cooling liquid flows through a cavity of the cooling jacket, the heat of the adsorption agent in the supporting cavity canbe rapidly brought away, so that the adsorption agent is rapidly cooled to an adsorption state. The ceramic heating adsorption-thermal desorption apparatus is small in size, portable, easy to connectwith various gathering systems and suitable for the online gathering of trace pollutants in an environment.

Description

technical field [0001] The invention relates to the field of sample pretreatment, and relates to a ceramic heating adsorption-thermal desorption device. The adsorbent can be freely matched to adapt to various target analytes. The ceramic heating method has a fast and uniform heating speed, and the cooling method adopts the cooling speed The extremely fast cooling of the low-temperature liquid can greatly reduce the analysis period of the adsorption-thermal desorption experiment. The whole set of equipment is small, portable, and easy to connect with the adsorption-thermal desorption system. It has broad application prospects in the adsorption-thermal desorption experiment. Background technique [0002] Nowadays, there are usually various volatile and semi-volatile organic pollutants around the environment that human beings rely on for survival, such as around waste incinerators and chemical plants. Although the content of some pollutants in the environment is very low, they ...

AI Technical Summary

Problems solved by technology

Although the content of some pollutants in the environment is very low, they are toxic, irritating and carcinogenic, and cause various acute and chronic damages to the human body. Therefore, the online monitoring of various organic pollutants in the environment has been received by people. pay close attention to and be able to study extensively

However, the concentration of some pollutants is extremely low, such as dioxin, etc., which cannot be directly analyzed by current analytical instruments, so it is generally enriched and concentrated first, and then detected by chromatography, mass spectrometry and other instruments

The current adsorption-thermal desorption device may have the problem of slow heating or cooling speed, or small sampling flux, so that the analysis cycle is greatly prolonged and the time resolution of online monitoring is reduced.

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