| Fundamentals FT-IR - FTIR Sample Preparation |
| Date: |
Tuesday, March 16, 2010 |
| Time: |
8:00 a.m. - 4:30 p.m. |
| Member Amount: |
$486.00 |
| Non-Member Amount: |
$972.00 |
| Description: |
Instructor: Dr. Brian C. Smith
A 2-day introduction to FTIR, an important chemical analysis technique. The first day covers how an FTIR works, how to measure data and instrument quality, library searching, and how to properly compare spectra for identity testing. Sample preparation is half the battle in obtaining good spectra; learn to win that battle on the second day. We will review how to prepare solids and liquids for FTIR analysis using KBr pellets and ATR. We will spend the rest of the day in a hands-on workshop where students will work with real samples and accessories to obtain real FTIR spectra.
I. The Basics of FTIR
A. Introduction to Infrared Spectroscopy
1. The Properties of Light
2. What is an Infrared Spectrum?
3. Infrared Spectroscopy: Good and Bad Points
B. The Advantages of FT-IR
1. Signal-to-Noise Ratio (SNR)
2. The Throughput Advantage
3. The Multiplex Advantage
C. The Disadvantage of FTIR: Water and CO2 Peaks
II. How an FT-IR Works
A. Interferometers & Interferograms
B. How a Spectrum is Produced
1. The Fourier Transform
2. Background & Single Beam Spectra
C. Optimizing Resolution & Minimizing Noise
D. FTIR Hardware
1. Infrared Sources
2. Beamsplitters
3. Detectors
4. The He-Ne Laser
E. Measuring Spectral & Instrument Quality
III. Spectral Manipulations: Handling Mixture Spectra
A. The Laws of Spectral Manipulation
B. Spectral Subtraction
1. Theory
2. Optimizing Subtraction Results
3. Spotting Artifacts
C. Library Searching
1. Background & Theory
2. The Search Process
3. Properly Interpreting Search Results
4. Subtract & Search Again: The Analysis of Mixtures
IV. Identity Testing for Raw Material Analysis
A. Variables to Control
B. Quantifying Comparisons
Day 2
I. Transmission Sampling
A. Advantages & Disadvantages
II. Transmission Sampling for Macroscopic Solids
A. KBr Pellets
1. Sample Prep.
2. Pellet Problems
III. Transmission Analysis of Liquids
A. Capillary Thin Films
B. Sealed Liquid Cells
IV. Reflectance Sampling
A. Advantages & Disadvantages
V. Diffuse Reflectance (DRIFTS) for Solids and Powders
A. Sample Prep.
B. Applications
C. Abrasive Sampling
VI. Attenuated Total Reflectance (ATR): A Technique for Many Samples
A. Accessory Design
B. Variables Affecting Spectral Appearance
C. Applications
1. Polymers
2. Semi-Solids: Gels, Waxes, Pastes etc.
3. Liquids
4. Powders
VII. Hands-On Sample Preparation Workshop Experiments
A. KBr Pellet Analysis of an Aspirin Tablet
B. Capillary Thin Films: The Easy Way to Analyze Liquids
C. ATR Spectra of :
1. Aqueous Solutions
2. Semi-Solids
3. Polymers
4. Powders
Wrap-up. Time for individual consultations and questions.
seating is limited please call Norma (204) 272-5095 to register |
