| Near-infrared region is defined by ASTM in the 780 ~ | | | | performance. Analysis process does not produce |
| 2526nm wavelength range of electromagnetic waves, | | | | pollution, consumes no other material, without |
| is that people first discovered the non-visible | | | | destroying the sample, analysis of reproducibility and |
| spectrum. As the material in the spectral region of | | | | low cost; can achieve rapid analysis, green analysis, |
| weak absorption signal frequency octave harmony, | | | | low-cost analysis, with "more, faster, better and |
| band overlapping, complex analysis, by the time | | | | cheaper" features. Particularly in complex materials, |
| Technology Level of restriction, near infrared | | | | natural products non-destructive, micro-loss analysis, |
| spectroscopy "sleeping" for nearly a half century. In | | | | line analysis, in situ analysis, transient analysis and so |
| recent years, the rapid development of analytical | | | | can not compare with the conventional analysis of |
| chemistry in the field of high technology, more and | | | | the merits. |
| more attracted domestic and foreign analysis Expert | | | | Near infrared spectroscopy for quality control and |
| The eyes, known as the analysis in analytical | | | | timely analysis of a large number of samples is very |
| chemistry "giants", it can be said to have brought the | | | | economical and fast, since before the establishment |
| emergence of yet another analysis of technological | | | | of near infrared spectroscopy to be a lot of |
| revolution. | | | | manpower, material and financial resources to get an |
| Near Infrared Spectroscopy application areas: Near | | | | accurate calibration model. Therefore, there is no |
| infrared spectroscopy is mainly reflect the CH, OH, | | | | near infrared spectroscopy for the corresponding |
| NH, SH and other groups about the sample structure, | | | | mathematical model is not applicable to the analysis |
| composition, nature of the information, so the scope | | | | of sporadic samples. |
| of analysis covers almost all the organic compounds | | | | Near Infrared Spectroscopy is an indirect analysis |
| and mixtures. Combined with its many unique | | | | using a mathematical model is two analytical |
| advantages, the decision of its broad applications, so | | | | techniques; generally not suitable for laboratory |
| in many industries can play an important role. Main | | | | precision, high stability analysis; near infrared |
| applications include: oil and petrochemicals, agriculture, | | | | spectroscopy is not suitable for trace analysis. |
| tobacco, food, beverage, pharmaceutical, organic | | | | Near infrared spectroscopy and conventional |
| chemical, fine chemical, life science, clinical medicine, | | | | methods of the different spectra |
| textile, paper, cosmetics, geography and geology, | | | | Usually the basic UV, visible spectroscopy and |
| aviation, remote sensing, quality control , and | | | | infrared spectroscopy such as conventional |
| environmental protection. In the petrochemical field of | | | | spectroscopy, NIR spectral region because of |
| oil products can be determined octane number, | | | | different information, different methods and |
| cetane number, flash point, freezing point, freezing | | | | instruments with conventional spectral analysis to be |
| point, distillation range, etc.; in agriculture can be | | | | very different . |
| measured grain protein, amino acids, sugars, fat, fiber, | | | | NIR spectral region of the different |
| water and other internal components content and | | | | Near-infrared spectral region wavelength range |
| hardness and other properties; in the field of medicine | | | | between visible light and infrared light, the spectral |
| can determine the active ingredients in | | | | region of both the rich amount of information in the |
| pharmaceuticals, composition and content; can | | | | infrared region and visible spectral region the |
| identify the types of samples, such as liquor and | | | | advantages of ease of use advantages. |
| perfumes, true and false identification, such as | | | | Infrared spectral region with the same near-infrared |
| environmental waste sorting. | | | | spectroscopy of molecular vibrational information, but |
| NIR features: Application of Near Infrared | | | | this spectral region is mainly harmonic vibration |
| Spectroscopy waycharacteristics: the work of near | | | | frequency of information and cooperation, analysis of |
| infrared spectroscopy spectrum region rich amount | | | | this spectral region can be achieved almost all of the |
| of information on the sample through the ability to | | | | relevant groups with hydrogen samples of chemical |
| have strong. Near infrared spectroscopy can be | | | | properties, physical properties, some of the biological |
| measured within a few seconds to complete a | | | | nature of multi-project analysis or both, is considered |
| spectrum of samples collected measurements, | | | | an "analysis has the potential to address global |
| transient mathematical model can be rely on the | | | | agriculture," the contemporary analysis. |
| completion of the determination of many of its | | | | |