Infrared (IR) Spectroscopy

Sep 11, 2015
By Spectroscopy Editors
Although near-infrared (NIR) spectroscopy is not a particularly sensitive technique, it can be implemented with little or no sample preparation and thus is well suited to applications such as process monitoring, materials science, and medical uses. We asked a panel of experts to comment on important current applications of NIR, as well as emerging new areas of application and the challenges involved in those newer applications.
Sep 01, 2015
Spectroscopy
When comparing spectra to ensure product quality and safety, one must determine if two spectra are the same. In part one, we show you how. In part two, we conclude our discussion of the spectra of straight-chain alkanes by answering the following question: Can infrared spectra be used to determine alkane chain length?
Aug 01, 2015
Special Issues
Although handheld FT-IR spectrometers now make it possible to carry out field-based FT-IR analysis of soils at a crime scene, reliable and tested protocols are not yet available for such work. Here, we discuss sampling options and describe tests of a methodology that is being eveloped for in situ FT-IR analysis of soil samples.
Aug 01, 2015
Special Issues
Quality control of silicones used in medicinal implants is challenging, and traditional methods waste a lot of raw material. In this study, NIR spectroscopy has been used to replace the traditional rheometric measurements, with excellent results. The NIR method enables improved quality control and a more economical process.
Aug 01, 2015
Special Issues
Infrared multiple angle incidence resolution spectroscopy (IR MAIRS) provides a powerful new tool to determine the molecular structure and orientation in a thin film on an IR-transparent substrate. The MAIRS technique replaces a tedious, and sometimes impossible, combination of sample preparation and analysis of identical films on both transparent and reflective substrates.
Jul 20, 2015
By Spectroscopy Editors
In honor of Spectroscopy’s celebration of 30 years covering the latest developments in materials analysis, we asked experts to assess the current state of the art of six key spectroscopic techniques. Here, the experts weigh in on what they considered the most important recent advances in infrared (IR) spectroscopy.
Jul 01, 2015
Spectroscopy
Five tried-and-true techniques for dealing with the IR spectral interpretation of mixtures. And check out the results of the recent quiz — and take the new one!
Jun 01, 2015
Spectroscopy
In honor of Spectroscopy's celebration of 30 years covering the latest developments in materials analysis, we asked a panel of experts to assess the current state of the art of infrared (IR) spectroscopy and to try to predict how the technology will develop in the future.
Apr 01, 2015
Spectroscopy
Interpreting infrared spectra is fun, but to do it properly one must be grounded in theory, which might be not so enjoyable for some.
Jan 01, 2015
Spectroscopy
There is a continuing need for Fourier transform infrared (FT-IR) users to receive training in how to interpret the infrared spectra they measure. This new column will provide practical advice about how to do this. This first installment will present why this type of column is important, discuss some basic IR theory, and lay out a blueprint for future installments.
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