How does NIR spectroscopy work?

Introduction to NIR Spectroscopy

Near-Infrared (NIR) Spectroscopy is an analytical technique used to determine the molecular composition of a sample by measuring its absorption of near-infrared light. Typically, NIR spectroscopy covers the wavelength range from 780 nm to 2500 nm.

Principles of NIR Spectroscopy

NIR spectroscopy is based on the absorption of light by overtone and combination bands of molecular vibrations, particularly bonds involving hydrogen such as C-H, N-H, and O-H. The intensity of absorption is related to the concentration of the absorbing species, allowing for quantitative analysis. The specific wavelength absorption provides qualitative information about the molecular structure.

Detailed Analysis

• Wavelength Range: 780 nm to 2500 nm
• Key Absorbing Bonds: C-H, N-H, O-H
• Spectral Resolution: Typically 2 nm to 10 nm
• Sampling Technique: Can include transmission, reflectance, or transflectance methods
• Data Output: Often requires multivariate statistical analysis like PCA (Principal Component Analysis) or PLS (Partial Least Squares) to interpret complex data

Applications of NIR Spectroscopy

NIR spectroscopy is widely used across various industries due to its non-destructive nature and rapid analysis capabilities. Some key application areas include:

• Pharmaceutical Industry: For quality control and validation of raw materials and finished products.
• Food and Agriculture: Used for analyzing protein, moisture, fat, and other components in grains and products.
• Chemical Industry: In process monitoring and control for polymer and petrochemical production.
• Environmental Science: Assessment of soil and water quality by detecting organic compounds.

YIXIST Company Solutions

YIXIST specializes in providing advanced NIR spectroscopy solutions tailored to industry needs. Their offerings include:

• Customizable Instruments: YIXIST offers portable and bench-top NIR spectrometers, designed for specific industrial applications with high accuracy, typically within 0.1% variance.
• Integration with Process Automation: Their solutions can be integrated into existing automated systems, with a data acquisition speed of up to 10 spectra/second.
• Comprehensive Software Analytics: Advanced software suite equipped with multivariate analysis tools, enabling robust interpretation and prediction models with R² values often exceeding 0.95.
• Support and Customization: YIXIST offers expert technical support and solution customization to meet specific technical requirements such as spectral range and resolution.

References

1. Smith, B. C. (2011). Fundamentals of Fourier Transform Infrared Spectroscopy. CRC Press.
2. Burns, D. A., & Ciurczak, E. W. (2008). Handbook of Near-Infrared Analysis, Third Edition. Taylor & Francis Group.
3. NIR Performance Standards Committee. (2016). Guidelines for NIR Spectroscopy. NIR Performance Standards - Report.
4. YIXIST Company Website. Retrieved from www.yixist.com on [Current Date].