Mass Spectroscopy

History of Mass spectroscopy

Introduction...

Uses of Mass Spec

Where are Mass Spectrometers Used?

"In Mass Spectroscopy (MS..."

"The chemical atomic weight or..."

Components of Mass Spec

Inlet System

Table 20-3, pg. 505    Natural Abundances of Isotopes of Some Common Reagents

Components of Mass Spec

Sample Handling

Operation of Mass Spec

Table 20-1, pg. 500
Ion Sources for
Molecular Mass Spectroscopy

Magnetic Sector Analyzers...

"The translational energy of an..."

Double Focusing Instruments...

Slide 18

Quadrupole Mass Filters...

Time-of-Flight Analyzers...

Computerized Mass Spectrometers...

Ion Sources...

Gas-Phase Sources...

Mass Spectra


Fig. 20-4, pg. 504

Fig. 20-6, pg. 507

"Electron-impact ionization is not very..."

"Advantages of Electron Impact sources"

"Disadvantages of Electron Impact sources"

Chemical Ionization Sources...

Chemical Ionization Source

Spark Source

Field Ionization Source

Desorption Sources...

Identification of Pure Compounds by Mass Spectroscopy...

"TANDEM MASS SPECTROSCOPY:"

MS/MS instrument

Electron Impact Source

Fig. 20-3, pg. 502
"An electron impact source."

Fragmentation Patterns

Electron Impact Ionization Process

Electron Impact Ionization Process

Electron Impact Ionization Process

Electron Impact Ionization Process

Electron Impact Ionization Process

Electron Impact Ionization Process

Electron Impact Ionization Process

Mass Analyzer

Single-Focusing Analyzers
with Magnetic Deflection

Magnetic Centripetal Force

Centrifugal Force

Kinetic Energy

Mass to Charge Ratio, m/z

Mass Analyzer

Fig. 20-13, pg. 517
Mattacuh-Herzog type double-focusing mass spectrometer.

Double Focus
Mass Spectrometer

Time of Flight Analyzers

Fig. 20-14, pg. 518
 Schematic of a time-of-flight mass spectrometer.

Quadrupole Analyzers

Quadrupole Mass Spectrometer

Ion Trap Analyzer

Fig. 20-15, pg. 518
Ion Trap Mass Spectrometer

Detectors...

Detectors...

Mass Analyzers...

Resolution of Mass Spectrometers...

Measurement and Display of Results

Fourier Transform
Mass Spectrometer

Computerized Mass Spectrometers

Computerized
Mass Spectrometers

Fig. 20-18, pg. 521

Computerized
Mass Spectrometers

Fig. 20-19, pg. 521

Computerized
Mass Spectrometers

Fig. 20-21, pg. 523

Determination of
Molecular Formula

Determination of
Molecular Formula

Determination of
Molecular Formula

Determination of
Molecular Formula

Example 20-5

Table 20-6, pg. 526

Nitrogen Rule

Fragmentation Patterns

Mass Spectrum of Toluene

Common Fragments

Slide 86

Fig. 20-1, pg. 500
Mass Spectrum of Ethyl Benzene

Identification of Compounds from Fragmentation Patterns

Fragmentation Patterns

Fragmentation Patterns

Fragmentation Patterns

Fragmentation Patterns

Fragmentation Patterns

Fragmentation Patterns

Example:
2,2,4-trimethylpentane

Example:
2,2,4-trimethylpentane

Example:
2,2,4-trimethylpentane

Example:
2,2,4-trimethylpentane

Example:
2,2,4-trimethylpentane