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quadrupole
(redirected from Quadrapole)

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
quadrupole [ˈkwɒdrʊˌpəʊl]
n
(Physics / General Physics) Physics a set of four associated positive and negative electric charges or two associated magnetic dipoles


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A combination of thin layer chromatography, ion-trapping gas chromarography-mas'-spectrometry, high pressure liquid chromatography, and quadrapole mass spectrometry was- used to characterize these oxidarion products, and the results reveal that a metabolite is produced coincident with MbH oxidation of PAPC, but not when Mb is used as the pro-oxidant.
Next the analyzer, of which there are also several to choose from, including: Quadrapole, Sector (Magnetic and/or Electrostatic), Time-of-Flight (TOF) and Ion Cyclotron Resonance (ICR), separates the ions of different masses.
QIAquick 96 PCR purification cartridges (Qiagen, Hilden, Germany, with modified binding and wash buffers) were used to remove unincorporated primers before tags were decoupled from amplification products by UV photolysis in a flow cell and analyzed in a quadrapole mass spectrometer by using positive-mode atmospheric pressure chemical ionization (APCI-MS, Agilent Technologies, Palo Alto, CA, USA).
 
 
 
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