A general-purpose ion source nozzle

Abstract

The invention relates to a universal-type ion-source nozzle of a novel structure. In the ion-source nozzle, a liquid inlet capillary tube, a gas inlet tube and a high-voltage wire are all arranged at a tail part of a basal body of the nozzle, wherein the liquid inlet caplillary tube is at the center, the gas inlet tube is on an inclined side face and an axis of the high-voltage wire is vertical to a plane in which center lines of the liquid inlet capillary tube and the gas inlet tube are located. The liquid inlet capillary tube is sealed and fixed at the tail part of the basal body of the nozzle through use of front and rear cutting sleeves and a screw head. The gas inlet tube is sealed and fixed at the tail part of the basal body of the nozzle through use of a conical screw head. The high-voltage wire is welded on a high-voltage guide head and is conductive with the basal body. The universal-type ion-source nozzle can be used as an electrospray channel nozzle and can also be used as a sample lead-in channel spray; and the universal-type ion-source nozzle is compact in structure, small in volume, mainly used to a normal-temperature and high-temperature extractive electrospray Ionization source and particularly applicable to small-scale direct mass spectrometric analysis.

Description

technical field [0001] The invention relates to an ion source nozzle, which is mainly used in electrospray extraction ion source, especially suitable for small direct mass spectrometry analysis. Background technique [0002] Electrospray extraction ionization mass spectrometry (Extractive Electrospray Ionization-Mass Spectrometry, EESI-MS) is a new type of ionization technology developed on the basis of inheriting ESI and DESI technology, and it is also a member of the open ionization technology family. Since the relative molecular mass and structural information of the analyte can be obtained without complex pretreatment of the sample, EESI-MS technology has become a research hotspot in recent years, and it has been widely used in liquids, aerosols, solid surfaces, viscous samples, etc. The analysis of morphological samples is especially suitable for real-time online continuous monitoring of liquid samples. [0003] The electrospray extraction ionization (EESI) device is m...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing ion source nozzles, which are large in size and expensive and not suitable for EESI mass spectrometry analysis, and the ion source nozzles assembled in the laboratory are inconvenient to use, low in stability, and poor in comprehensive performance, the present invention provides a new The general-purpose ion source nozzle, the ion source nozzle can be used as both an electrospray channel nozzle and a sample introduction channel nozzle, with strong versatility, small size, convenient use, high stability, good comprehensive performance, and low cost

Images