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12 Newest Publications about the topic nir spectrometers

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Sensors, Vol. 17, Pages 2693: Comparison of Benchtop Fourier-Transform (FT) and Portable Grating Scanning Spectrometers for Determination of Total Soluble Solid Contents in Single Grape Berry (Vitis vinifera L.) and Calibration Transfer

22-Nov-2017 | Xiao, Hui ; Sun, Ke ; Sun, Ye ; Wei, Kangli ; Tu, Kang ; Pan, Leiqing, Sensors, 2017

Sensors, Vol. 17, Pages 2693: Comparison of Benchtop Fourier-Transform (FT) and Portable Grating Scanning Spectrometers for Determination of Total Soluble Solid Contents in Single Grape Berry (Vitis vinifera L.) and Calibration Transfer Sensors doi: 10.3390/s17112693 Authors: Hui ...

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Calibration transfer between NIR spectrometers: New proposals and a comparative study

28-Feb-2017 | Abel Folch‐Fortuny, Raffaele Vitale, Onno E. de Noord, Alberto Ferrer, Journal of Chemometrics, 2017

Calibration transfer between near‐infrared (NIR) spectrometers is a subtle issue in chemometrics and process industry. In fact, as even very similar instruments may generate strongly different spectral responses, regression models developed on a first NIR system can rarely be used with spectra ...

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iHEART: a miniaturized near-infrared in-line gas sensor using heart-shaped substrate-integrated hollow waveguides

20-Aug-2016 | Rafael L. Ribessi; Thiago de A. Neves; Jarbas J. R. Rohwedder; Celio Pasquini; Ivo M. Raimundo; Andreas Wilk; Vjekos ..., Analyst, 2016

A novel heart-shaped substrate-integrated hollow waveguide (hiHWG) was integrated with a near-infrared micro-spectrometer (μNIR) for sensing natural gases, resulting in an ultra-compact near-infrared gas sensing system – iHEART. The iHEART system was evaluated using two different μNIR ...

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Standardization of NIR data to identify adulteration in ethanol fuel

06-Sep-2015 | Author(s): Karla Danielle Tavares Melo Milanez, Adenilton Camilo Silva, José Eduardo Matos Paz, Everaldo Paulo ..., Microchemical Journal, 2015

Publication date: January 2016 Source:Microchemical Journal, Volume 124 Author(s): Karla Danielle Tavares Melo Milanez, Adenilton Camilo Silva, José Eduardo Matos Paz, Everaldo Paulo Medeiros, Márcio José Coelho Pontes This work proposes the use of classification transfer based on ...

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Differentiation of post harvest date fruit varieties non‐destructively using FT‐NIR spectroscopy

04-Feb-2013 | Mohammad S. S. Tavakolian,, Florina A. Silaghi,, Angelo Fabbri,, Giovanni Molari, Alessandro Giunchi, Adriano Guarnieri, International Journal of Food Science & Technology, 2013

Summary The world production of dates has more than doubled over the last two decades. Presently, the industrial sorting of dates is a difficult operation, affected by a high level of losses. As a consequence, the objective of this article is to study the variety discrimination capabilities of ...

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Evaluating the Transferability of FT-NIR Calibration Models for Fatty Acid Determination of Edible Fats and Oils Among Five Same-make Spectrometers Using Transmission or Transflection Modes with Different Pathlengths

08-Aug-2012 | Hormoz Azizian, John K. G. Kramer, Magdi M. Mossoba, Journal of the American Oil Chemists' Society, 2012

Fourier transform near-infrared (FT-NIR) spectroscopy in conjunction with partial least squares 1 (PLS1) calibration models was previously reported to be an alternative method to GC for the rapid determination of the fatty acid (FA) composition of fats and oils. These calibration models had been ...

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Efficient Spectrofluorimetric Analysis of Single-Walled Carbon Nanotube Samples

09-Sep-2011 | John-David R. Rocha; Sergei M. Bachilo; Saunab Ghosh; Sivaram Arepalli; R. Bruce Weisman, Analytical Chemistry, 2011

A new method and instrumentation are described for rapid compositional analysis of single-walled carbon nanotube (SWCNT) samples. The customized optical system uses multiple fixed-wavelength lasers to excite NIR fluorescence from SWCNTs individualized in aqueous suspensions. The emission spectra ...

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Non destructive estimation of moisture, water activity and NaCl at ham surface during resting and drying using NIR spectroscopy

06-May-2011 | Carles, Collell , Pere, Gou , Jacint, Arnau , Josep, Comaposada, Food Chemistry, 2011

This paper describes the ability of near infrared reflectance (NIR) spectroscopy to predict moisture, water activity (aw) and NaCl content at the surface of dry-cured ham during the process. A Fourier Transform (FT) NIR spectrometer and two probes (on-contact and remote) were tested directly on ...

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Infrared Spectroscopy: A Novel Tool for the Physicochemical Characterization of Particulate, Monolithic and Coated Stationary Phases

14-Feb-2011 | Christian W. Huck, Lukas Bittner, Chromatographia, 2011

The design of novel stationary phases is a permanent demanding challenge in chromatographic and electrophoretic separation science to enable analysis with enhanced selectivity, specificity and speed. Therefore, the characterization of chemical and physical properties is next to calculation of ...

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In‐line characterization of polypropylene nanocomposites using FT‐NIR

05-Sep-2010 | Witschnigg, Andreas; Laske, Stephan; Kracalik, Milan; Feuchter, Michael; Pinter, Gerald; Maier, Günther; Mä ..., Journal of Applied Polymer Science, 2010

The morphology of polymer nanocomposites is usually characterized by various methods like X-ray diffraction (XRD) or transmission electron microscopy (TEM). In this work, a new approach for characterizing nanocomposites is developed: the results of small angle x-ray scattering, on-line ...

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