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Spectros Associates Proudly Presents the One Day Short Course

Infrared Sample Preparation

Instructor: Dr. Brian C. Smith

A 1-day overview of how to prepare samples for infrared analysis. The first part of the course is a detailed look at the wide variety of infrared sampling techniques. The second part of the course is a hands-on sample preparation workshop using real FTIRs and sampling accessories. You will learn how to prepare solids, powders, liquids, semi-solids, pastes, gels, polymers, and gases for IR analysis. Sample preparation is half the battle in obtaining good spectra, learn to win that battle!

  1. Overview of IR Sample Preparation Techniques
    1. Transmission Sampling
    2. Reflection Sampling
    3. Advantages & Disadvantages

  2. Transmission Sampling for Solids
    1. KBr Pellets
      1. Sample Prep.
      2. Pellet Problems
    2. Mulls (Mineral/Nujol)
      1. Preparation
      2. Eliminating Oil Bands

  3. Transmission Sampling for Polymers
    1. Casting Films
    2. The Heat & Pressure Method

  4. Transmission Analysis of Liquids and Gases
    1. Capillary Thin Films
    2. Sealed Liquid Cells
    3. Gas Cells

  5. Diffuse Reflectance (DRIFTS) for Solids and Powders
    1. Sample Prep.
    2. Applications
    3. Abrasive Sampling

  6. Attenuated Total Reflectance (ATR): A Technique for Many Samples
    1. Accessory Design
    2. Variables Affecting Spectral Appearance
    3. Applications
      1. Polymers
      2. Semi-Solids: Gels, Waxes, Pastes etc.
      3. Liquids
      4. Powders

  7. Sample Preparation Workshop Experiments
    1. KBr Pellet Analysis of an Aspirin Tablet
    2. DRIFTS and Abrasive Sampling of Solids
    3. Capillary Thin Films: The Easy Way to Analyze Liquids
    4. ATR Spectra of :
      1. Aqueous Solutions
      2. Semi-Solids
      3. Polymers
      4. Powders

Wrap-up. Time for individual consultations and questions.

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