The model presented here provides a framework for understanding many high resolution and tandem mass spectrometry experiments. The article by Nier (1) provides an excellent introduction, a historical perspective, and many references for the development and theory of …

2022年9月28日 · A mass spectrometer has three essential needs: a means for producing ions, in this case (mostly) singly charged atoms; a means for separating these ions in space or in time by their mass-to-charge ratios; and a means for counting the number of …

Mass spectrometry involves the control of ion movement by applying electrostatic fields. Ion optics is the term given to this electrostatic manipulation of ion flow in analogy with light manipulation by optical lenses.

A mass spectrometer is an important analytical instrument which scientists can use to identify the amount and type of different chemicals in a substance. In this explanation I’ll go through how the mass spectrometer works.

Mass spectrometers are used in industry and academia for both routine and research purposes. The following list is just a brief summary of the major mass spectrometric applications: In Mass Spectroscopy (MS), atomic and molecular weights are generally expessed in terms of atomic mass units (amu).

It is possible to realize a complete second order double focus­ ing mass spectrometer consisting of a toroidal electric field and a homogeneous magnetic field or of cylindrical electric plus

2023年4月1日 · In recent years, mass spectrometers play an important role in space missions. Based on this, we introduced a newly developed compact double-focusing mass spectrometer. The MS mainly consists of three parts, that is, electron ionization source, electrostatic and magnetic analyzer, focal plane detector.

2022年8月28日 · Mass spectrometry (MS) is a powerful characterization technique used for the identification of a wide variety of chemical compounds. At its simplest, MS is merely a tool for determining the molecular weight of the chemical species in a sample.

1997年1月1日 · This chapter focuses on mass spectrometry. Mass spectrometry performs three main functions—namely, (1) the ionization of molecules, (2) the separation of these molecules according to their mass-to-charge-ratio, and (3) the determination of the respective abundance of each ion produced.

2024年2月14日 · At each point in time, the mass spectrometer measures the mass of all molecules entering the mass spectrometer. It then creates a mass spectra with peaks that correspond to each molecule. Scientists can use the mass of the peak ( m/z ), the time it was collected (retention time, or RT), and the peak intensity to identify which molecule is being ...