A multifunctional continuous online gas preparation and introduction device

Abstract

The invention provides a multifunctional continuous online gas preparation and introduction device, which includes a sample stage unit, a rotating unit and several sample injection units. The sample stage unit includes a sample plate, a water storage ring and a sample plate cover, and several blind holes are arranged above the sample plate. , the water storage ring is located inside the sample tray, and the sample tray cover is set outside the sample tray; the rotation unit is located above the sample tray, and it includes an electric rotary table and a circular guide rail, the electric rotary table is fixed in the middle of the sample tray, and the circular guide rail is installed on the electric rotary table above, and at least one slider is provided on the circular guide rail; each sampling unit includes a screw slide, a drive motor and a needle, the screw slide is installed on the slide, the drive motor is connected to the slide of the guide rail, and the needle passes through the needle card The groove is fixed on the outside of the rail slider. Beneficial effects of the present invention: gas preparation and introduction are carried out in a rotating manner, and various pretreatment operations can be performed on multiple sample bottles at the same time, which is especially suitable for experimental analysis requiring complicated pretreatment and sample injection methods.

Description

Technical field [0001] The present invention relates to the field of gas preparation and introduction devices, and more particularly to a multifunctional continuous online gas preparation and import device. Background technique [0002] Gas stable hositosome spectrometer is a type of instrument that can analyze light element isotope such as hydrogen, oxygen, carbon, nitrogen, and sulfur, is widely used in the fields of geological, environmental and quality supervision. Currently, gas stabilizing the same -bore mass spectrometer can convert different forms of samples into gases in different forms of samples, and introduce online testing of the mass spectrometer host. The specific external device mainly includes a liquid chromatograph having a liquid phase organic component, a gas phase chromatograph having a gas phase organic component, a gas phase chromatography, a gas phase chromatograph, which can be separated from the gas phase organic component. [0003] According to the expe...

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Problems solved by technology

[0004] However, the current GasBench gas preparation and introduction method needs to be purged and tested successively, which seriously limits the analysis efficiency, and more complex analysis methods cannot achieve online continuous analysis on this equipment

Specifically, for example: 1) in the C and O isotopes of conventional carbonates, after the sample bottle is purged by the sample arm, it needs to be manually replaced with an acid needle and a sample needle for acid addition and testing. 2) Multi-component C and O isotope analysis of binary mixed carbonate rocks. The gas preparation and introduction process of this analysis experiment is very complicated, and it is necessary to carry out purging, acid addition and sample injection analysis under low temperature conditions first. , the second purge, and then raise the temperature for the second test under high temperature conditions. Traditional sampling equipment cannot perform complex pre-treatment operations such as online multiple purge and sample injection, and cannot quickly raise and lower the temperature. Each sample is subjected to strict time-controlled pre-treatment, which is time-consuming and labor-intensive and has large errors; 3) Analysis of H by water balance method 2 H and O isotopes in O, this method needs to replace the air in the sample bottle with CO 2 mixed gas or H 2 Mixed gas, after the catalysis reaches isotope balance, manually replace the injection needle, extract the gas and introduce it into the mass spectrometer to analyze its H and O isotopes. This method is also inefficient

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