Biomaterial Database

Electrochemically assisted fast atom bombardment negative ion mass spectrometry of quinones. 1989

L R Phillips, and J E Bartmess

Division of Biochemistry and Biophysics, Food and Drug Administration, Bethesda, Maryland 20892.

Several 1,4-quinones, including vitamin K1, have been examined by electrochemically assisted fast atom bombardment (EFAB) negative ion mass spectrometry. The resulting mass spectra of these substances show a significant increase in signal/chemical noise when compared to normal fast atom bombardment (FAB) mass spectra. Additionally, the use of EFAB results in some control over the reduction processes normally associated with FAB mass spectrometry.

UI	MeSH Term	Description	Entries
D010084	Oxidation-Reduction	A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).	Redox,Oxidation Reduction
D010837	Vitamin K 1	A family of phylloquinones that contains a ring of 2-methyl-1,4-naphthoquinone and an isoprenoid side chain. Members of this group of vitamin K 1 have only one double bond on the proximal isoprene unit. Rich sources of vitamin K 1 include green plants, algae, and photosynthetic bacteria. Vitamin K1 has antihemorrhagic and prothrombogenic activity.	Phylloquinone,Phytomenadione,Phytonadione,Aquamephyton,Konakion,Phyllohydroquinone,Vitamin K1
D011048	Polarography	An electrochemical technique for measuring the current that flows in solution as a function of an applied voltage. The observed polarographic wave, resulting from the electrochemical response, depends on the way voltage is applied (linear sweep or differential pulse) and the type of electrode used. Usually a mercury drop electrode is used.	DC Polarography,Pulse Polarography,Polarography, DC,Polarography, Pulse
D011809	Quinones	Hydrocarbon rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.
D004563	Electrochemistry	The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.	Electrochemistries
D013058	Mass Spectrometry	An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.	Mass Spectroscopy,Spectrometry, Mass,Spectroscopy, Mass,Spectrum Analysis, Mass,Analysis, Mass Spectrum,Mass Spectrum Analysis,Analyses, Mass Spectrum,Mass Spectrum Analyses,Spectrum Analyses, Mass