'Molecular ion' diaporamas de présentation

Mass Spectrometry (Mass Spec.)

Mass Spectrometry (Mass Spec.). Prof. Yonghai Chai. School of Chemistry & Materials Science. For Bilingual Chemistry Education. OUTLINE. Introduction to Mass Spectrometry Ionization Methods Mass Analyzer Fragmentation and MS Interpretation Hyphenated MS Techniques. By James Crawford.

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Chapter 13: Spectroscopy Methods of structure determination

Chapter 13: Spectroscopy Methods of structure determination • Nuclear Magnetic Resonances (NMR) Spectroscopy (Sections 13.3-13.19) • Infrared (IR) Spectroscopy (Sections 13.20-13.22) • Ultraviolet-visible (UV-Vis) Spectroscopy (Section 13.23)

1.18k views • 73 slides

Organic Mass Spectrometry

Organic Mass Spectrometry. Interpretation of Mass Spectra Part 3. The Molecular Ion. Most valuable info of the mass spectrum Molecular mass Elemental composition Fragments must be consistent with it Not always stable with EI

944 views • 47 slides

Organic Chemistry

Organic Chemistry. William H. Brown & Christopher S. Foote. Mass Spectrometry. Chapter 12. Chapter 14. Mass Spectrometry (MS). An analytical technique for measuring the mass-to-charge ratio (m/z) of ions, most commonly positive ions, in the gas phase

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Mass Spectrometry (MS)

Mass Spectrometry (MS). An analytical technique for measuring the mass-to-charge ratio ( m/z ) of ions in the gas phase. Mass spectrometry is our most valuable analytical tool for determining accurate molecular masses. Also can give information about structure.

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698 views • 40 slides

Precision Molecular Ion Spectroscopy: A New Probe for New Physics

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Photochemistry

Photochemistry. Lecture 7 Photoionization and photoelectron spectroscopy. Hierarchy of molecular electronic states. Ionic excited states. Ionic ground state (ionization limit). Neutral Rydberg states. Excited states (S 1 etc). Neutral Ground state . Photoionization processes.

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LC-MS

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13.21 Mass Spectrometry

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Lecture IX Crystals dr hab. Ewa Popko

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Chapter 15 Structure Determination by Spectroscopy II: UV-Vis & Mass

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Introduction to Mass Spectrometry (MS)

Introduction to Mass Spectrometry (MS) A mass spectrometer produces a spectrum of masses based on the structure of a molecule. The x-axis of a mass spectrum represents the masses of ions produced (m/z) The y-axis represents the relative abundance of each ion produced

1.62k views • 21 slides

821 views • 20 slides

Presented by Jaghdish Battu

Presented by Jaghdish Battu. MASS SPECTROMETRY. Dept.of Chemistry Avanthi Degree & P.G College. Mass Spectrometry. Introduction General overview

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Lecture 11

Lecture 11. GC-MS Ionization. GC-MS. GC. MS. Computer. What is MS?. GC. MS. Computer. GC. What is MS?. MS. Gas phase. Ions. GC-MS Ionization Sources. Electron Impact Ionization (EI). Positive Chemical Ionization (PCI). Negative Chemical Ionization (NCI).

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Introduction to mass spectrometry

Introduction to mass spectrometry. Electron Impact Ionisation Mass Spectrometry (EIMS). The sample is vaporised and ionised in the ion source of the mass spectrometer. Ionisation occurs via bombardment of the sample with a stream of high energy electrons.

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Mass Spectroscopy

Mass Spectroscopy. As Applied to Organic Molecules By Jim Tyser. M.S. How It Works. The physics behind mass spectrometry is that a charged particle passing through a magnetic field is deflected along a circular path on a radius that is proportional to the mass to charge ratio, m/e.

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Lecture 4b

Lecture 4b. Mass Spectrometry. History . J. J. Thompson was able to separate two neon isotopes ( Ne-20 and Ne-22 ) in 1913, which was the first evidence that isotopes exist for stable elements (Noble Prize 1906 in Physics, Discovery of the electron in 1897)

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A SHORT PRIMER ON MASS SPECTROSCOPY

A SHORT PRIMER ON MASS SPECTROSCOPY. Tim Hubin and William Kelly Southwestern Oklahoma State University. WHAT IS MASS SPECTROSCOPY.

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