NIR (Near Infrared Reflectance) and NIT (Near Infrared Transmittance) are recognised as providing easy-to-use, rapid, and non-destructive methods of analysis. The technique is based on absorption in the infrared region of the electromagnetic spectrum in the wavelength region 780–2500 nm.
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). Earlier we noted that absorption bands in the region that extends from 1500 cm –1 to 4000 cm –1 are called group frequencies. The …
Near-infrared reflectance analysis is an analytical technique that uses the near-infrared diffuse reflectance of a sample at several discrete wavelengths to predict the concentration of one or more … Expand. 48. Save. Reflectance spectroscopy in the visible and near-infrared (0.35–2.55 µm): Applications in carbonate petrology.
The near-infrared analysis also showed β-sheet formation of heat-treated BSA in aqueous solutions and in subsequently freeze-dried solids. The present results thus indicated that the nondestructive near-infrared analysis can be used for the investigation of dehydration-induced changes in protein secondary structures.
A demand grew in near-infrared spectroscopy community for a new state-of-the-art textbook. With aim to satisfy such need, a go-to-book for background theory, applications and tutorial "Near-Infrared …
Infrared energy is the electromagnetic energy of molecular vibration. The energy band is defined for convenience as the near infrared (0.78 to 2.50 microns); the …
Osborne, B. G. Near-infrared spectroscopy in food analysis. In Encyclopedia of analytical chemistry: applications, theory and instrumentation 14 (John Wiley & Sons, Ltd Chichester, ...
Near Infrared Spectroscopy (NIR) is a type of vibrational. spectroscopy that employs photon energy (h ν) in the. energy range of 2.65 x 10 -19 to 7.96 x 10-20 J, which. corresponds to the ...
Near-infrared analysis (NIRA) is an analytical technique which uses the diffuse reflectance of a sample to determine spectrophotometrically the chemical concentrations or physical properties of a sample. Because NIRA uses a series of multiple linear regressions to deduce automatically corrections for background or sample-matrix …
Abstract. Near-infrared (NIR) spectroscopy is a fast and non-destructive analytical technique that offers many advantages for a broad range of industrial applications. In this work, we reviewed recent developments in the pharmaceutical domain where it can be applied from raw material identification to final product release.
Over the last few years, near-infrared (NIR) spectroscopy has rapidly developed into an important and extremely useful method of analysis. In fact, for certain research areas and applications, ranging from material science via chemistry to life sciences, it has become an indispensable tool because this fast and cost-effective type of …
Near infrared spectroscopy (NIRS) analysis has advantages of no pretreatment requirement, simple and rapid, applicable wide ranges of samples, and simultaneous detection of multiple components, which has been widely used in agriculture, food, medicine, and other fields [[4], [5], [6]].
To enable sharing of near infrared analysis models of pulp holocellulose and lignin content in two different types of spectroscopic instruments, a combined SWCSS-S/B algorithm was proposed. The stable and consistent wavelengths between the spectroscopic instruments screened by the SWCSS method reduced the differences between the instruments ...
Near-infrared analysis of nanofibrillated cellulose aerogel manufacturing Int J Pharm. 2022 Apr 5;617:121581. doi: 10.1016/j ... Residual water content is a critical quality attribute of the freeze-dried product, which can be monitored in-line with near-infrared (NIR) spectroscopy. Predictive models of NIR have not been previously applied …
Near-infrared spectroscopy (NIRS) has become a more popular approach for quantitative and qualitative analysis of feeds, foods and medicine in conjunction with an arsenal of chemometric tools. This was the foundation for the increased importance of NIRS in other fields, like genetics and transgenic monitoring. A …
Quantitative analysis of blended fabrics plays a vital role in quality inspection and trade. As a method yielding non-destructive, pollution-free, and easy-to-obtain data, near-infrared spectroscopy is becoming an important supplement to the detection methods of blended fabrics. In other near-infrared spectroscopy analysis …
Near-infrared (NIR) spectroscopy is a highly flexible form of analysis, which can be applied to a broad range of research and industrial process applications. Long a staple technology in remote sensing, NIR spectroscopy has become popular within industrial markets as a cost-effective tool for measuring materials to optimize processes and ...
The most common application of near-infrared spectroscopy in petrochemical analysis is determining the octane number of refined gasoline in real-time, during production. The octane number of gasoline is defined as the proportion of 2,2,4-trimethylpentane (iso-octane) to heptane in a refined gasoline mixture.
NIR is the commonly used term for Near InfraRed spectroscopy, an analysis technique which has been used in the food and agricultural industries since the late 1970s. Over the years it has become …
All of these techniques are related and rely on near-infrared light being used to characterize materials. BENEFITS. Commercialized starting in the 1970s, NIR has become a popular and widespread analytical technique for the analysis of food, agricultural, pharmaceutical and chemical products. NIR analyzers have the following benefits:
The near infrared analysis (NIRA) approach was studied to examine its capability for predicting spectral feature soil properties from the reflectance curves in the near infrared (NIR) region (1–2.5 µm) of arid and semiarid soils. High-resolution diffuse reflectance spectra (3113 spectral points) in the NIR region were recorded for 91 soil ...
Near-infrared (NIR) spectroscopy has gained remarkable value as a nondestructive analytical technique and it has become the tool of choice in several fields of application. 1, 2 Its primary advantages in …
Rapid, inexpensive, and easy-to-deploy, near-infrared (NIR) spectroscopy can be used to analyze samples of virtually any composition, origin, and condition. The Handbook of Near Infrared Analysis, Fourth Edition, explores the factors necessary to perform accurate and time- and cost-effective analyses across a growing spectrum of disciplines. This updated …
This article aims to overview infrared (IR) spectroscopy. Simultaneously, it outlines mid-infrared (MIR), near-infrared (NIR), and far-infrared (FIR) or terahertz (THz) spectroscopy separately, and compares them in terms of principles, characteristics, advantages, and applications. MIR spectroscopy is the central spectroscopic technique in …
Rapid, inexpensive, and easy-to-deploy, near-infrared (NIR) spectroscopy can be used to analyze samples of virtually any composition, origin, and condition. The …
Near infrared (NIR) spectroscopy is an excellent candidate for these applications, with minimal sample preparation for real-time decision-making. We will detail the development of a golf ball-sized NIR spectrometer developed specifically for this purpose. The instrument is based upon a thin-film dispersive element that is very stable …
This book provides knowledge of the basic theory, spectral analysis methods, chemometrics, instrumentation, and applications of near-infrared (NIR) …
In general, content analysis with infrared spectroscopy combined with chemometrics is carried out through several stages. First, the samples of spectra data are scanned using near-infrared (NIR) and mid-infrared (MIR) spectrometers. The sample is also analyzed by the reference method to get the actual value.
A definition of the technology as applied in food production. Near Infrared (NIR) analysis is a spectroscopic technique that makes use of the naturally occurring electromagnetic spectrum. The NIR region is the area of the …
Reflected near-infrared radiation can be sensed by satellites, allowing scientists to study vegetation from space. Healthy vegetation absorbs blue- and red-light energy to fuel photosynthesis and create chlorophyll. A plant with more chlorophyll will reflect more near-infrared energy than an unhealthy plant. Thus, analyzing a plants spectrum of ...
Fast, inexpensive, and easy-to-use, near-infrared (NIR) spectroscopy can be used to analyze small samples of virtually any composition. The Handbook of Near Infrared Analysis, Third Edition explains how to perform accurate as well as time- and cost-effective analyses across a growing spectrum of disciplines. Presenting nearly 50% new …
Near-infrared spectroscopy (NIRS) is a fast and nondestructive technique that provides multi-constituent analysis of virtually any matrix. It covers the …
Background: Noninvasive glucose measurements are possible by analysis of transmitted near-infrared light over the 4000- to 5000-cm(-1) spectral range. Such measurements are highly sensitive to the exact position of the fiber-optic interface on the surface of the skin sample. A critical question is the degree of heterogeneity of the major ...
We provide unique hardware and software products, some unavailable anywhere else. CONTACT US. The Near Infrared Research Corporation 69 Jamie Court Suffern, N.Y. 10901. Telephone: 845-357-9496. e-mail: The Near Infrared Research Corporation, Inc. RELATED SITES. COMMERCIAL SITES. Spectroscopy: Spectroscopy.
A demand grew in near-infrared spectroscopy community for a new state-of-the-art textbook. With aim to satisfy such need, a go-to-book for background theory, applications and tutorial "Near-Infrared Spectroscopy Theory, Spectral Analysis, Instrumentation, and Applications" was prepared.
Near-infrared (NIR) is a spectroscopic method based on the absorption of light in the wavelength region between 700 and 2500 nm due to vibrations of molecular functional groups in the sample. ... This often requires the use of sophisticated data analysis methods that place additional demands on vendors to provide stable NIR instruments and …