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39 relations: Accelerator mass spectrometry, Alpha cleavage, Analyte, Cartesian coordinate system, Chromatography, Electron, Elution, Fourier-transform ion cyclotron resonance, Fragmentation (mass spectrometry), Francis William Aston, Free induction decay, Frequency domain, Histogram, Internal standard, International Union of Pure and Applied Chemistry, Ion, Ion source, Ion trap, ISO 31, J. J. Thomson, Kendrick mass, Mass, Mass spectrometry, Mass-to-charge ratio, McLafferty rearrangement, National Institute of Standards and Technology, Orbitrap, Power (physics), Quadrupole ion trap, Quadrupole mass analyzer, Quantities, Units and Symbols in Physical Chemistry, Resolution (mass spectrometry), Sine wave, Thomson (unit), Time-of-flight mass spectrometry, Toluene, Tropylium cation, Unified atomic mass unit, Whole number rule.
Accelerator mass spectrometry
Accelerator mass spectrometry (AMS) is a form of mass spectrometry that accelerates ions to extraordinarily high kinetic energies before mass analysis.
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Alpha cleavage
Alpha cleavage (α-cleavage) in organic chemistry refers to the act of breaking the carbon-carbon bond adjacent to the carbon bearing a specified functional group.
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Analyte
An analyte, component (in clinical chemistry), or chemical species is a substance or chemical constituent that is of interest in an analytical procedure.
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Cartesian coordinate system
A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length.
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Chromatography
Chromatography is a laboratory technique for the separation of a mixture.
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Electron
The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.
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Elution
In analytical and organic chemistry, elution is the process of extracting one material from another by washing with a solvent; as in washing of loaded ion-exchange resins to remove captured ions.
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Fourier-transform ion cyclotron resonance
Fourier-transform ion cyclotron resonance mass spectrometry is a type of mass analyzer (or mass spectrometer) for determining the mass-to-charge ratio (m/z) of ions based on the cyclotron frequency of the ions in a fixed magnetic field.
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Fragmentation (mass spectrometry)
In mass spectrometry, fragmentation is the dissociation of energetically unstable molecular ions formed from passing the molecules in the ionization chamber of a mass spectrometer.
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Francis William Aston
Francis William Aston FRS (1 September 1877 – 20 November 1945) was an English chemist and physicist who won the 1922 Nobel Prize in Chemistry for his discovery, by means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements, and for his enunciation of the whole number rule.
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Free induction decay
In Fourier transform nuclear magnetic resonance spectroscopy, free induction decay (FID) is the observable NMR signal generated by non-equilibrium nuclear spin magnetization precessing about the magnetic field (conventionally along z).
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Frequency domain
In electronics, control systems engineering, and statistics, the frequency domain refers to the analysis of mathematical functions or signals with respect to frequency, rather than time.
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Histogram
A histogram is an accurate representation of the distribution of numerical data.
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Internal standard
An internal standard in analytical chemistry is a chemical substance that is added in a constant amount to samples, the blank and calibration standards in a chemical analysis.
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International Union of Pure and Applied Chemistry
The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.
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Ion
An ion is an atom or molecule that has a non-zero net electrical charge (its total number of electrons is not equal to its total number of protons).
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Ion source
An ion source is a device that creates atomic and molecular ions.
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Ion trap
An ion trap is a combination of electric or magnetic fields used to capture charged particles, often in a system isolated from an external environment.
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ISO 31
ISO 31 (Quantities and units, International Organization for Standardization, 1992) is a deprecated international standard for the use of physical quantities and units of measurement, and formulas involving them, in scientific and educational documents.
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J. J. Thomson
Sir Joseph John Thomson (18 December 1856 – 30 August 1940) was an English physicist and Nobel Laureate in Physics, credited with the discovery and identification of the electron; and with the discovery of the first subatomic particle.
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Kendrick mass
The Kendrick mass is defined by setting the mass of a chosen molecular fragment, typically CH2, to an integer value in atomic mass units.
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Mass
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
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Mass spectrometry
Mass spectrometry (MS) is an analytical technique that ionizes chemical species and sorts the ions based on their mass-to-charge ratio.
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Mass-to-charge ratio
The mass-to-charge ratio (m/Q) is a physical quantity that is most widely used in the electrodynamics of charged particles, e.g. in electron optics and ion optics.
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McLafferty rearrangement
What is often termed the McLafferty rearrangement is a reaction observed in mass spectrometry during the fragmentation or dissociation of organic ions.
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National Institute of Standards and Technology
The National Institute of Standards and Technology (NIST) is one of the oldest physical science laboratories in the United States.
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Orbitrap
In mass spectrometry, Orbitrap is an ion trap mass analyzer consisting of an outer barrel-like electrode and a coaxial inner spindle-like electrode that traps ions in an orbital motion around the spindle.
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Power (physics)
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
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Quadrupole ion trap
A quadrupole ion trap is a type of ion trap that uses dynamic electric fields to trap charged particles.
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Quadrupole mass analyzer
The quadrupole mass analyzer (QMS) is one type of mass analyzer used in mass spectrometry.
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Quantities, Units and Symbols in Physical Chemistry
Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry.
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Resolution (mass spectrometry)
In mass spectrometry, resolution measures of the ability to distinguish two peaks of slightly different mass-to-charge ratios ΔM, in a mass spectrum.
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Sine wave
A sine wave or sinusoid is a mathematical curve that describes a smooth periodic oscillation.
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Thomson (unit)
The thomson (symbol: Th) is a unit that has appeared infrequently in scientific literature relating to the field of mass spectrometry as a unit of mass-to-charge ratio.
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Time-of-flight mass spectrometry
Time-of-flight mass spectrometry (TOFMS) is a method of mass spectrometry in which an ion's mass-to-charge ratio is determined via a time of flight measurement.
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Toluene
Toluene, also known as toluol, is an aromatic hydrocarbon.
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Tropylium cation
In organic chemistry, the tropylium ion is an aromatic species with a formula of +. Its name derives from the molecule tropine (itself named for the molecule atropine).
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Unified atomic mass unit
The unified atomic mass unit or dalton (symbol: u, or Da) is a standard unit of mass that quantifies mass on an atomic or molecular scale (atomic mass).
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Whole number rule
The whole number rule states that the masses of the isotopes are whole number multiples of the mass of the hydrogen atom.
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Mass Spectra, Mass Spectrum, Mass spectra, Spectral skewing.
References
[1] https://en.wikipedia.org/wiki/Mass_spectrum
