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Method and device for evaluating performance of ionization device

An evaluation method and ionization technology, applied in the direction of measuring devices, resources, instruments, etc., can solve problems such as inconsistency, lack of acceptance standards and specifications, open ion source technology performance detection and analysis, etc., to improve accuracy and evaluation process scientific effect

Inactive Publication Date: 2021-04-16
NINGBO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the lack of unified standards and specifications, there are many non-standard and non-uniform problems in the process of R&D, manufacturing, inspection and acceptance of direct mass spectrometer ionization devices, such as performance indicators and inspection methods, which are likely to cause disputes
[0006] 2. The lack of unified acceptance standards and specifications has largely led to disorderly competition in the direct mass spectrometry ionization device industry, which is not conducive to improving the independent innovation capabilities and industrial development of core technologies and components in the field of mass spectrometry in my country
[0007] Existing research mainly focuses on the ion detection end inside the mass spectrometer, and does not perform performance testing and analysis on the effect of the open ion source technology, which greatly increases the analysis of the influencing factors of the sample detection results in an open environment, so there is a lack of an ionization Device performance evaluation device and evaluation method

Method used

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  • Method and device for evaluating performance of ionization device
  • Method and device for evaluating performance of ionization device
  • Method and device for evaluating performance of ionization device

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Embodiment 1

[0042] figure 1 A flow chart of the evaluation method for the performance of the ionization device in the embodiment of the present invention is given, as figure 1 As shown, the evaluation method of the performance of the ionization device comprises the following steps:

[0043] (A1) The collection unit is arranged between the ion outlet of the ionization device and the mass spectrometer inlet, and is used to collect the information of the ion flow emitted from the ion outlet;

[0044] (A2) Detect the collection unit, obtain the electrical parameter A of the collection unit multiple times i , such as voltage, current, etc., i=1,2,3···N, N is an integer;

[0045] (A3) According to the electrical parameter A i , to obtain the evaluation parameter C;

[0046]

[0047] (A4) Obtain the evaluation result of the ionization device according to the evaluation parameter C:

[0048] If the evaluation parameter C>C 0 , threshold C 0 ∈[0.05,0.15], the ionization device is unqual...

Embodiment 2

[0065] The method for evaluating the performance of the ionization device according to the embodiment of the present invention includes the following steps:

[0066] (A1) The ring-shaped collection unit is arranged between the ion outlet of the ionization device and the mass spectrometer inlet, and is used to collect the information of the ion flow emitted from the ion outlet; the ring-shaped collection unit (enclosing the area) The central axis is collinear with the central axis of the mass spectrometry inlet;

[0067] The distance L between the collection unit and the mass spectrometry inlet 1 ∈(0,2]mm, such as 1mm, 1.4mm, 2mm, etc., the distance L between the collection unit and the ion outlet 2 ∈[5,20]mm, such as 5mm, 8mm, 12mm, 16mm, 20mm, etc.;

[0068] (A2) Detect the collection unit, obtain the electrical parameter A of the collection unit multiple times i , the electrical parameter in the present embodiment is electric current, i=1,2,3...N, N is an integer, such as...

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Abstract

The invention provides a method and device for evaluating the performance of an ionization device, and the method comprises the following steps: (A1) a collection unit is disposed between an ion outlet and a mass spectrum sample inlet of the ionization device, and is used for collecting the information of an ion flow emitted from the ion outlet; (A2) the collection unit is detected, the electrical parameter Ai of the collection unit is obtained multiple times, i=1, 2, 3... N, and N is an integer; (A3) an evaluation parameter C shown in the specification is obtained according to the electrical parameter Ai; (A4) an evaluation result of the ionization device is obtained according to the evaluation parameter C: if the evaluation parameter C is greater than C0 and the threshold C0 belongs to [0.05, 0.15], the ionization device is unqualified; and if the evaluation parameter C is less than or equal to C0, the ionization device is qualified. The method has the advantages of scientific and accurate evaluation and the like.

Description

technical field [0001] The invention relates to a mass spectrometry ionization device, in particular to an evaluation method and device for the performance of the ionization device. Background technique [0002] Mass spectrometry has the characteristics of high sensitivity and good specificity, and plays an irreplaceable role in trace analysis. The direct mass spectrometer ionization device is a key component of mass spectrometers, and its engineering and industrialization development has greatly promoted the development of my country's mass spectrometer industry. [0003] In recent years, direct mass spectrometry ionization technology is a new revolution in the field of analysis. It has the advantages of less sample consumption, fast analysis speed, support for real-time in-situ detection, and low detection cost. It is a powerful detection "weapon" in the fields of public safety, food safety, drug analysis, and life sciences. [0004] Modern direct mass spectrometry ioniz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G01N27/62
CPCG06Q10/06393G01N27/62
Inventor 闻路红余晓梅胡舜迪陈安琪刘云
Owner NINGBO UNIV
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