Continuous gas liquid phase microextraction device in conjunction with gas chromatography

Abstract

The invention discloses a continuous gas liquid phase microextraction device in conjunction with a gas chromatography, which consists of the continuous gas liquid phase microextraction device and a sampling device, wherein the continuous gas liquid phase microextraction device consists of a liquid phase microextraction syringe, a semiconductor condenser, a miniature heater and a gas flow controller for communicating with inert gas; and the sampling device in conjunction with the gas chromatography consists of the liquid phase microextraction syringe, a solvent tank, a waste liquid bottle, a four-way sampling valve connected with a stepping motor, a gas flow controller, a pressure-regulating valve and a gas source. The continuous gas liquid phase microextraction device has the beneficial effects that the continuous gas liquid phase microextraction device is the extension of liquid phase microextraction, the sample pretreatment time is shortened, the error generated by manual operation is eliminated, and the continuous gas liquid phase microextraction device has the advantages of convenience in use, accuracy in quantifying, good experimental result reproducibility, automation realization and the like. The conjunction of a liquid phase microextraction technology with the gas chromatography and the application of on-line analysis of trace components in a complicated sample are realized.

Description

technical field [0001] The invention relates to a gas chromatography sample pretreatment device combined with gas chromatography, specifically refers to a device that connects liquid phase microextraction and gas chromatography to realize continuous gas liquid phase microextraction combined with gas chromatography s installation. Background technique [0002] Sample preparation is an important step in any chemical analysis process, however sample preparation takes a lot of time. According to reports, in a complete sample analysis process, more than 80% of the time is spent on sample preparation. In order to shorten the time required for the entire process of sample analysis, today's sample processing technology is developing towards integration and automation. Among various sample processing technologies, continuous gas-liquid phase microextraction integrates extraction, purification and concentration, and is a newly developed highly integrated sample processing technology...

AI Technical Summary

Problems solved by technology

However, the manual sampling method is currently used in liquid phase microextraction and gas chromatography analysis. Not only is the operation very cumbersome, it is easy to cause large human errors

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