A quadrupole mass spectrometer and method of use thereof
A quadrupole mass spectrometer and quadrupole technology, applied in the field of mass spectrometers, can solve the problem that liquid cannot directly enter the quadrupole mass spectrometer, and achieve the effect of simple structure and simple processing flow
Active Publication Date: 2020-10-09
NAT INST OF METROLOGY CHINA
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Problems solved by technology
[0006] The purpose of the present invention is to provide a quadrupole mass spectrometer and its use method, which solves the problem that in the prior art, liquid cannot directly enter the quadrupole mass spectrometer, and it needs complex processing procedures such as chromatographic separation before it can enter the quadrupole mass spectrometer. Instrument measurement
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[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0036] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
[0037] Such as Figure...
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The invention relates to the field of mass spectrometers, and provides a quadrupole rod mass spectrometer. The quadrupole rod mass spectrometer comprises a membrane sampling system and a quadrupole rod mass spectrometer system, wherein the quadrupole rod mass spectrometer system comprises a vacuum cavity, an ion source assembly, a quadrupole rod assembly and a detector assembly; the ion source assembly, the quadrupole rod assembly and the detector assembly are all arranged in the vacuum cavity; the vacuum cavity is provided with a sample inlet, and the sample inlet is provided with a sample inlet pipe in a penetrating manner; and one end of the sample inlet pipe is connected with the membrane sampling system, and the other end is communicated with an ionization chamber of the ion source assembly. The invention further discloses a use method of the quadrupole rod mass spectrometer; the membrane sampling system is used for separating gas from a water sample, and a method for bombarding an ionization source by low-energy electrons is adopted, so that the problems of more fragment ions and overlapping of spectrum fragment peaks of different substances caused by absence of chromatographic separation are avoided, and mass spectrometry detection of gas dissolved in water is realized; and the quadrupole rod mass spectrometer is simple in structure and concise in process flow.
Description
technical field [0001] The invention relates to the field of mass spectrometers, in particular to a quadrupole mass spectrometer and a method for using the same. Background technique [0002] Mass spectrometry is one of the most basic instruments for studying the basic composition, structural characteristics, physical and chemical properties of substances. It is an essential instrument in the fields of life science, material science, food safety, and environmental protection. It is the core of modern analytical instruments. It is essentially a spectroscopic method that uses electric and / or magnetic fields to separate moving ions according to their mass-to-charge ratios and then detect them. By measuring the exact mass of the ion, the compound composition of the ion can be determined. It is mainly used for structural identification of compounds, and it can provide structural information such as molecular weight, elemental composition, and functional groups of compounds. It ...
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IPC IPC(8): H01J49/42H01J49/14H01J49/04G01N30/72
Inventor 黄泽建江游戴新华方向陈大舟龚晓云翟睿谢洁
Owner NAT INST OF METROLOGY CHINA