Near-IR absorption spectrum of dichloromethane showing complicated overlapping overtones of mid IR absorption features. Near-infrared spectroscopy (NIRS) is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from 780 nm to 2500 nm). [1]

2023年1月23日 · Near-infrared light (NIR) is a type of infrared light that is the closest on the electromagnetic radiation spectrum to human sight. However, since it is further than what we can see, the wavelengths recorded from NIR are just slightly longer, from …

2024年1月8日 · Near-infrared and infrared spectroscopy use different spectral ranges of light, which results in a difference of the required sample size, penetration of the light into the sample, and spectral information. Learn why NIR spectroscopy has many advantages over IR with regards to speed and versatility.

Near-Infrared (NIR) Spectroscopy. The near-IR extends from approximately 13,000 cm –1 (a wavelength of 770 nm or 0.77 µm, the upper wavelength limit of visible light) to 4000 cm –1 (a wavelength of 2,500 nm or 2.5 µm).

Near Infrared refers to the region of the spectrum extending from about 700 nm to 2500 nm, which contains overtone and combination bands of lower frequency fundamentals below 4,000 cm −1. It is advantageous for quantitative analyses due to weaker intensity bands, allowing for better control in production processing.

Near-infrared (NIR) spectroscopy is concerned with absorption, emission, reflection, and diffuse-reflection of light in the region of 800–2500 nm (12,500–4000 cm − 1).

2005年6月15日 · Near-infrared spectroscopy (NIRS) is a fast and nondestructive technique that provides multi-constituent analysis of virtually any matrix. It covers the wavelength range adjacent to the mid infrared and extends up to the visible region.

2023年1月3日 · Near-infrared (NIR) spectroscopy is a powerful analytical technique that has found wide applications in various fields, including chemistry, pharmaceuticals, agriculture, food science, and materials science.

Near-infrared spectroscopy (NIR) is a widely used rapid alternative to time-consuming, solvent intensive, wet-chemistry methods and chromatographic techniques. Rely on NIR to quickly verify incoming raw materials, monitor reaction progress, and quantify final products with ease.

2024年4月4日 · Near infrared (NIR) spectroscopy is a spectroscopic technique used in various industries. Here, we explain its importance in the pharmaceutical, agriculture, and food and beverage analysis industries.