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Rapid, Multi-Component Analysis of Soybeans by FT-NIR Spectroscopy
Chris Heil, Thermo Fisher Scientific
Near-infrared (NIR) spectroscopy has greatly simplified and improved the speed of analysis for quality testing of soybeans. The use of near-infrared spectroscopy has led to higher sample throughput by replacing multiple time consuming and complex wet chemistry techniques that often require significant sample preparation. This application study will show how the Thermo Scientific Antaris Fourier transform near-infrared (FT-NIR) analyzer with the Sample Cup Spinner accessory was successfully used to develop calibration models proving that rapid, non destructive near-infrared technology can accurately predict important components in soybeans. |
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Classification of Bacteria using FT-IR
D. Lefier, INRA-URTAL-Poligny, France; Bruno Beccard and Mike Bradley, Ph.D., Thermo Fisher Scientific
High-throughput screening (HTS) hardware and software tools greatly accelerate the screening of pathogenic and non-pathogenic bacteria for the food industry, especially groups like cheese producers. This throughput improvement is largely realized through automation of the data collection and analysis. |
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Infrared Microspectroscopy in Forensic and Crime Lab Analysis
Claude Robotham, Ph.D. and Federico Izzia, Thermo Fisher Scientific
Infrared microscopy provides the forensic scientist with rapid visual and chemical information for many types of samples. The sensitivity and non-destructive nature of infrared ensures accurate interpretation while preserving evidence. The spatial resolution and sensitivity of linear array imaging can quickly reveal the presence of trace materials. |
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Determining Modifications to a Simulated Manuscript Using Surface-Enhanced Raman Scattering (SERS)
Timothy O. Deschaines, Ph.D., Thermo Fisher Scientific
Analysis of historical documents is important to verify their veracity and historical accuracy. Effective analysis can be a challenge, especially as science makes it easier for those seeking to modify a manuscript or document to craft more effective tools for forgery. This application note discusses the use of Surface-Enhanced Raman Scattering (SERS) for the analysis of a simulated manuscript that has been created and then altered using different historic black inks. It shows how SERS can be used to distinguish when different inks are present on a manuscript, even when the secondary ink used may be very similar to the original ink. A Thermo Scientific DXR Raman microscope, equipped with a 532 nm laser, brightfield/darkfield illumination, 10× microscope objective, and a motorized microscope stage was used for this experiment. |
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Analysis of Ink on a Forged Check Using Surface-Enhanced Raman Scattering (SERS)
Timothy O. Deschaines, Ph.D., Thermo Fisher Scientific
Analysis of questioned documents can play an important role in a forensic investigation. The types of analysis required can vary, and samples can be in many different forms, including inks, papers, handwriting, copiers, printers, etc. This application note shows how Surface-Enhanced Raman Scattering (SERS) can be used for the analysis of ink samples on a check to determine if it has been altered or not. |
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A Guide to Raw Material Analysis using Fourier Transform Near-Infrared Spectroscopy
Jeffrey Hirsch, Thermo Fisher Scientific
FT-NIR spectroscopy has found increased use in the pharmaceutical, polymer and chemical industries in recent years. Although FT-NIR has been used for quantitative analysis in many circumstances, the most frequent use has been for the unambiguous confirmation of raw material identity. The extension of FT-NIR for qualification can save a substantial amount of money by preventing the production of out-of-specification product. The Antaris MDS System has all of the sampling devices needed for raw material analysis. |
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Addressing Complex Sample Matrices
Nicole Kreuziger Keppy, Thermo Fisher Scientific
One of the difficulties in analyzing samples with complex matrices such as vaccines, injectable pharmaceuticals, and nutritional supplements, is that they often contain additives which exhibit a significant absorption in the same wavelength range as the analyte of interest. This problem can lead to inaccuracies in collected data and methods for these samples can be time consuming to perform. The Evolution 300 UV-Vis spectrophotometer equipped with two cell changers provides a simplified solution to this problem. |
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FT-IR Polymers - Complete Materials Deformulation Using TGA-IR
Michael Bradley, Ph.D., Thermo Fisher Scientific
The melding of Thermal Gravimetric Analysis (TGA) and Infrared spectroscopy (IR) more than doubles the analytical power for the deformulation of materials in many industries. With the addition of multi-component searching, the identification of the overlapped vapor emissions no longer requires spectral interpretation skills, greatly reducing the time per analysis for experienced and inexperienced users alike. Consistency in the analysis is also assured. |
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Determination of Film Thickness
Gordon Bain, Ph.D., Michael W. Allen, Ph.D., and Nicole Kreuziger Keppy, Thermo Fisher Scientific
The Evolution Array UV-Vis spectrophotometer, combined with a Specular Reflectance Accessory, provides fast, convenient and accurate measurement of film thickness. It can be used to measure thin films on the order of a few microns thick for applications such as photoresist films on semiconductors, LCD monitors, nano-gel particles, optical lenses and anodized coatings. |
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Characterizing Fluorescence and Phosphorescence from Plastic Samples
Steve Lowry, Ph.D. and Michael W. Allen, Ph.D., Thermo Fisher Scientific
Although many samples analyzed with a fluorescence spectrometer are liquids placed in a traditional 10 mm cuvette, a flexible research-grade instrument can do much more. To illustrate the capabilities of the Lumina™ fluorescence spectrometer for solid measurements, the fluorescence and
phosphorescence analysis of “glow-in-the-dark “ plastic samples is described in this application note. |
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