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Electrospray ionization (ESI) is a technique used in mass spectrometry to produce ions using an electrospray in which a high voltage is applied to a liquid to create an aerosol. It is especially useful in producing ions from macromolecules because it overcomes the propensity of these molecules to fragment when ionized. ESI is different from other ionization processes (e.g. matrix-assisted laser desorption/ionization (MALDI)) since it may produce multiple-charged ions, effectively extending the mass range of the analyser to accommodate the kDa-MDa orders of magnitude observed in proteins and their associated polypeptide fragments.
Desorption electrospray ionization imaging source
1. The name of the design product: desorption electrospray ionization imaging source. 2. The use of the design product: a desorption electrospray ionization imaging source, which makes the analyte desorb and ionize by spraying solvent to bombard the sample surface, and is used for mass spectrometric analysis of substances. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.
Owner:JIANGSU PUCE SCI INSTR CO LTD