Mass spectrometry system and method based on automatic sampling

Abstract

The invention provides a mass spectrometry system and method based on automatic sample introduction. The mass spectrometry system based on automatic sample introduction comprises a support, an ion source and a mass spectrometer, wherein a first guide rail arranged on the support comprises a first part and a second part which are connected, a second guide rail is arranged on the support, a first bearing part is arranged on the second guide rail; the sliding part is arranged on the first guide rail and connected with a rotating shaft, the rotating shaft is rotatably arranged on the first bearing part, and the central axis of the sliding part and the central axis of the rotating shaft are arranged in parallel and are not collinear; a first translation device is fixed on the support and is used for driving a first bearing piece to move forwards and backwards; a second translation device is arranged on the support and is used for driving the dilution unit to move forwards and backwards; a second bearing part is fixedly connected with the rotating shaft, and a third translation device is arranged on the second bearing part and used for driving the ion source to move forwards and backwards. The system has advantages of automation and the like.

Description

technical field [0001] The invention relates to mass spectrometry analysis, in particular to a mass spectrometry analysis system and method based on automatic sampling. Background technique [0002] In public security anti-drug departments, drug testing centers, third-party testing centers and various testing institutions, when it is necessary to perform mass spectrometry testing on solid powder samples in the laboratory, the samples must be dissolved and diluted according to application requirements before mass spectrometry testing can be performed. This detection method has disadvantages, such as: [0003] 1. In view of the fact that the mass spectrometer in the laboratory today has certain requirements for the concentration of the detection sample, the detection of high-concentration samples is likely to cause contamination of the mass spectrometer, while low-concentration samples are not easy to detect. [0004] 2. Most of the sample pretreatment in the laboratory is ma...

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Problems solved by technology

[0005] The first method is to calculate the dilution concentration before the sample pretreatment and then weigh the ratio, but there is a risk of calculation error, and it is time-consuming, and requires high professional quality of the operator;

[0006] The second method is to perform multi-stage dilution of quantitative liquids, dip the samples in multiple quantitative liquids and dilute them sequentially, reduce the concentration by a certain ratio, and then perform mass spectrometry detection in sequence from low to high concentrations until the detection results are obtained. This method is faster However, the sequence of sampling is prone to errors, which poses risks to the application of the mass spectrometer itself, and has certain requirements for the professional quality of the operators.

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