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Descriptor English: Spectrometry, Mass, Electrospray Ionization
Descriptor Spanish: Espectrometría de Masa por Ionización de Electrospray
Descriptor espectrometría de masas con ionización por electrospray
Entry term(s) espectrometría de masas por ESI
Scope note: Técnica de espectrometría de masas usada para el análisis de compuestos no volátiles tales como proteínas y macromoléculas. Esta técnica requiere la preparación de gotas de moléculas del analito disueltas en un solvente, cargadas eléctricamente. Las gotas eléctricamente cargadas entran en una cámara de vacío donde se evapora el disolvente. La evaporación del disolvente reduce el tamaño de la gota, lo que aumenta la repulsión culómbica dentro de la misma. Como las gotas cargadas se tornan menores, la carga excesiva dentro de ellas hace que se desintegren y liberen las moléculas del analito. Las moléculas volatilizadas son entonces analizadas por espectrometría de masas.
Descriptor Portuguese: Espectrometria de Massas por Ionização por Electrospray
Descriptor French: Spectrométrie de masse ESI
Entry term(s): ESI Mass Spectrometry
Electrospray Ionization Mass Spectrometry
Mass Spectrometry, ESI
Spectrometry, ESI Mass
Tree number(s): E05.196.566.600
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D021241
Scope note: A mass spectrometry technique used for analysis of nonvolatile compounds such as proteins and macromolecules. The technique involves preparing electrically charged droplets from analyte molecules dissolved in solvent. The electrically charged droplets enter a vacuum chamber where the solvent is evaporated. Evaporation of solvent reduces the droplet size, thereby increasing the coulombic repulsion within the droplet. As the charged droplets get smaller, the excess charge within them causes them to disintegrate and release analyte molecules. The volatilized analyte molecules are then analyzed by mass spectrometry.
Allowable Qualifiers: CL classification
EC economics
ES ethics
HI history
IS instrumentation
MT methods
SN statistics & numerical data
ST standards
TD trends
VE veterinary
Previous Indexing: Spectrum Analysis, Mass (1985-2000)
Public MeSH Note: 2001
History Note: 2001
DeCS ID: 35400
Unique ID: D021241
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 2001/01/01
Date of Entry: 2000/06/22
Revision Date: 2006/07/05
Spectrometry, Mass, Electrospray Ionization - Preferred
Concept UI M0352282
Scope note A mass spectrometry technique used for analysis of nonvolatile compounds such as proteins and macromolecules. The technique involves preparing electrically charged droplets from analyte molecules dissolved in solvent. The electrically charged droplets enter a vacuum chamber where the solvent is evaporated. Evaporation of solvent reduces the droplet size, thereby increasing the coulombic repulsion within the droplet. As the charged droplets get smaller, the excess charge within them causes them to disintegrate and release analyte molecules. The volatilized analyte molecules are then analyzed by mass spectrometry.
Preferred term Spectrometry, Mass, Electrospray Ionization
Entry term(s) ESI Mass Spectrometry
Electrospray Ionization Mass Spectrometry
Mass Spectrometry, ESI
Spectrometry, ESI Mass



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