To perform Fourier-transform infrared (FTIR) spectroscopy, several materials and equipment are necessary for sample preparation and analysis. Here's a detailed breakdown:
1. Sample Preparation Equipment:
- Pellet Press Die Set: This is used to create solid pellets from the sample mixed with potassium bromide (KBr). The die sets come in various diameters to accommodate different sample sizes.
- Pestle and Mortar: Typically made of agate, these are used to grind and mix the sample with KBr powder. The smooth surfaces of agate pestles and mortars help in minimizing sample loss and contamination.
- Hydraulic Presses (Bramah Presses): These are essential for applying the necessary pressure to form the KBr mixture into a solid pellet.
2. Sample Analysis Accessories:
- Attenuated Total Reflection (ATR) Accessories: These allow direct measurement of samples, particularly useful for powder samples.
- Diffuse Reflection Accessories (DRIFTS): Useful for analyzing samples that reflect light diffusely, commonly used with powder samples.
- Specular Reflectance Accessories: These are used for samples that reflect light specularly, often used in materials science.
3. Consumables:
- KBr Powder: This is a common matrix material used to mix with the sample to prepare it for pellet formation.
4. Additional Equipment:
- RTD (Resistance Temperature Detector): Although mentioned in the reference, this is typically not directly related to FTIR spectroscopy but is more relevant to temperature measurement in chemical processes.
- Mechanical Seal and Motor Unit: These are also mentioned but are not directly related to FTIR spectroscopy; they are more relevant to maintaining the rotation of a flask in chemical processes.
In summary, the primary materials needed for FTIR spectroscopy include a pellet press die set, pestle and mortar, hydraulic presses, and KBr powder for sample preparation. For analysis, various sampling techniques like ATR, DRIFTS, and specular reflectance require specific accessories tailored to the sample's form and the desired measurement method.
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