IR spectroscopy for physics engineering.pptx

Engineering physics spectroscopy - ir

1. Topics to be covered in this Slide-

2. SPECTROSCOPY- In engineering chemistry, spectroscopy is a technique used to examine how materials interact with light. By studying how substances absorb, emit, or scatter light, engineers can gather information about the composition, structure, and properties of materials, which is crucial for various applications in fields like materials science, chemical engineering, and analytical chemistry.

3. IMPORTANCE OF SPECTROSCOPY- In analytical chemistry, spectroscopy is crucial for identifying and quantifying substances in a sample. It provides a powerful tool to analyze the unique "fingerprint" of molecules, helping chemists determine the composition and concentration of compounds with high precision. This is essential for quality control, environmental monitoring, and various industries where accurate chemical analysis is necessary.

4. TYPES OF SPECTROSCOPY- SPECTROSCOPY UV-Visible Spectroscopy Infrared Spectroscopy (IR) Nuclear Magnetic Resonance (NMR) Spectroscopy Mass Spectrometry (MS) X-ray Spectroscopy Circular Dichroism (CD) Spectroscopy Photoelectron Spectroscopy (XPS/UPS) Electron Spin Resonance (ESR) Spectroscopy Raman Spectroscopy Fluorescence Spectroscopy

5. Infrared Spectroscopy (IR) - Infrared Spectroscopy (IR) analyzes how materials absorb infrared light. It helps identify and understand the chemical composition of substances, especially in organic compounds. This technique is widely used in chemistry to study molecular structures and identify unknown compounds.

6. FEATURES OF IR SPECTRUM- The electromagnetic spectrum encompasses all types of electromagnetic radiation. It ranges from high-energy, short-wavelength gamma rays and X-rays to low-energy, long-wavelength radio waves. Categorization based on wavelength includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

7. ADVANTAGE OF IR SPECTROSCOPY- Versatility: Applicable to a broad range of compounds. Functional Group Identification: Provides specific information about functional groups. Rapid Analysis: Offers quick and efficient substance identification. Non-Destructive: Analyzes samples without causing damage. Quantitative Analysis: Enables concentration determination. Complementary Technique: Often used in combination with other analytical methods.

8. DRAWBACKS OF IR SPECTROSCOPY- Limited Sensitivity to Light Elements: May lack sensitivity to elements like hydrogen and helium. Water Vapor Interference: Interference from water vapor in certain regions. Overlapping Peaks: Peaks in complex samples may overlap, posing interpretation challenges. Sample Preparation Requirements: Some samples require meticulous preparation. Limited Structural Information: Provides less detailed structural information compared to some techniques. Instrumentation Costs: High-quality IR spectrometers can be expensive.

9. APPLICATIONS OF IR SPECTROSCOPY- Chemical Identification: Identify and characterize chemical compounds. Pharmaceutical Analysis: Aid in drug formulation and quality control. Polymer Analysis: Analyse polymers for composition and structure. Environmental Monitoring: Detect and quantify environmental pollutants. Polymer Analysis

10. APPLICATIONS OF IR SPECTROSCOPY- 5. Food and Beverage Industry: Ensure quality and analyse composition. 6. Forensic Science: Identify substances in crime scene investigations. 7. Material Science: Characterize materials and study properties. 8. Medical Diagnostics: Use in disease detection and biomarker identification. WAVE NUMBER Forensic Science

11. REFRENCE-