Mass spectrometry Chpt 22

Mass spectrometry Chpt 22 - Daniel C. Harris Quantitative...

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1 Quantitative Chemical Analysis Seventh Edition Quantitative Chemical Analysis Seventh Edition Chapter 22 Mass spectrometry Copyright © 2007 by W. H. Freeman and Company Daniel C. Harris Daniel C. Harris http://webbook.nist.gov/chemistry/mw-ser.html What is mass 28? •N 2 •CO •C 2 H 4 (ethylene) •H 6 B 2 (diborane)
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2 3 step program: 1.Ionize 2.Mass select 3.detect Instrumentation 2. Mass selection: • Magnetic sector • Quadrupole • Time-of-flight (TOF) • Ion trap • Fourier transform ion cyclotron resonance • Ion Mobility Instrumentation NB: REQUIRE VACUUM CHAMBER Instrumentation – magnetic sector Instrumentation - quadrupole
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3 Instrumentation - quadrupole Instrumentation - TOF Instrumentation – ion trap Instrumentation – FT-ICR
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4 Instrumentation – FT-ICR Instrumentation – ion mobility Instrumentation – STEP 3: detector – STEP 1: Ion Source – Electron impact http://webbook.nist.gov/chemistry/mw-ser.html Standard 70 eV electron impact ionization
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– STEP 1: Ion Source
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This note was uploaded on 05/19/2010 for the course CHEM 150 taught by Professor Buratto during the Spring '08 term at UCSB.

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Mass spectrometry Chpt 22 - Daniel C. Harris Quantitative...

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