quadrupole spectrum
41Analytical chemistry — For the journal, see Analytical Chemistry (journal). Analytical chemistry is the study of the separation, identification, and quantification of the chemical components of natural and artificial materials.[1] Qualitative analysis gives an… …
42Chemical ionization — (CI) is an ionization technique used in mass spectrometry.[1][2][3] Chemical ionization is a lower energy process than electron ionization. The lower energy yields less fragmentation, and usually a simpler spectrum. A typical CI spectra has an… …
43Matrix-assisted laser desorption/ionization — MALDI TOF mass spectrometer Matrix assisted laser desorption/ionization (MALDI) is a soft ionization technique used in mass spectrometry, allowing the analysis of biomolecules (biopolymers such as DNA, proteins, peptides and sugars) and large… …
44DART ion source — A capsule being analyzed is held in the sample chamber between the DART ion source (right) and the spectrometer inlet (cone on left). DART (Direct Analysis in Real Time) is an atmospheric pressure ion source that instantaneously ionizes gases,… …
45Magnetosphere of Jupiter — Discovery[1] Discovered by …
46Fragmentation (chemistry) — Fragmentation is a type of chemical dissociation. Fragmentation of a molecule can take place by a process of heterolysis or homolysis. It is a phenomenon observed in mass spectrometry where it is used as a tool to find the structural formula of a …
47Nuclear magnetic resonance spectroscopy — A 900MHz NMR instrument with a 21.2 T magnet at HWB NMR, Birmingham, UK Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy, is a research technique that exploits the magnetic properties of certain atomic nuclei… …
48Sector instrument — A five sector mass spectrometer A sector instrument is a general term for a class of mass spectrometer that uses a static electric or magnetic sector or some combination of the two (separately in space) as a mass analyzer.[1] A popular… …
49Collision-induced dissociation — In Mass spectrometry, Collision induced dissociation (CID), referred to by some as collisionally activated dissociation (CAD), is a mechanism by which to fragment molecular ions in the gas phase. The molecular ions are usually accelerated by some …
50Orbitrap — An orbitrap is a type of mass spectrometer invented by Alexander Makarov. It consists of an outer barrel like electrode and a coaxial inner spindle like electrode that form an electrostatic field with quadro logarithmic potential… …
