Chapter 6
Principles of Mass Spectrometry
Spektrometria mas: Przegląd
Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass ...
Spektrometria mas: efekt izotopowy
Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of ...
Spektrometria mas: przegląd fragmentacji molekularnej
The ionization of a molecule into a molecular ion inside the mass spectrometer causes instability in the molecule's structure due to the loss of an ...
Spektrometry masowe
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record ...
Widmo masowe
A mass spectrum is the graphical representation of the relative abundance of the charged fragments in an analyte plotted against their mass-to-charge ...
Spektrum masowe: interpretacja
Given a known molecular ion mass, the unknown compound can be identified.
The empirical formula is determined from the molecular ion mass and the isotope ...
Analizatory masy: przegląd
Common mass analyzers include magnetic sector, double-focusing, quadrupole, time-of-flight, and ion trap analyzers.
The capability of any mass analyzer ...
Analizatory masy: typowe typy
The quadrupole mass analyzer consists of four parallel rods, across which are applied a DC voltage and a radio-frequency AC voltage.
Here, the field ...
Spektrometria mas o wysokiej rozdzielczości (HRMS)
The resolution of a mass spectrometer depends on the efficiency of separating ions with different ion masses. The mass of an atom is approximated to the ...
Spektrometria mas: analiza złożona
The analysis of complex mixtures requires the combination of separation methods and mass spectrometry in sequence, termed hyphenated methods.
GC–MS ...
Tandemowa spektrometria mas
Tandem mass spectrometry, or MS/MS, combines two mass analyzers in sequence, connected by a collision or interaction cell.
First, the samples are ionized ...
Chromatografia gazowa – spektrometria mas (GC–MS)
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a ...
Spektrometria mas z plazmą sprzężoną indukcyjnie (ICP–MS): Przegląd
Inductively coupled plasma–mass spectrometry, or ICP–MS, uses an ICP source to prepare samples for atomic mass spectrometry.
Solution-state ...
Spektrometria mas z plazmą sprzężoną indukcyjnie (ICP-MS): Interferencje
Despite the advantages offered by ICP–MS, accurate elemental analysis is affected by spectroscopic and non-spectroscopic interferences.
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