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IR spectroscopy is a useful tool for group chemical species identification of a wide variety of sample materials, particularly for the classification of “organic” chemical materials based upon carbon atoms being present in the molecular structure. Many plastic and polymeric type samples which can be included in the category of organic molecular materials can be classified into particular “family” groupings and it is possible to identify the sample family types both qualitatively and quantitatively by use of the Attenuated Total Reflectance (ATR) technique as an IR measurement.
Thermo Scientific introduses its OMNIC Picta software which enables users to quickly locate and identify targeted materials
Pike Technologies has introduced high-performance, long-path IR gas cells for analysis of air contaminants, pure gases and gas mixtures.
The 1.3-m focal length McPherson Model 209 spectrometer with new micro-step drive can make wavelength steps as small as 0.1 pm.
The Thermo Scientific Smart iTX uses a monolithic diamond, and has an improved optical design that maximises performance.
The GladiATR accessory from Pike Technologies may now be configured for heating up to 300°C.
Pike Technologies has introduced their next generation of integrating spheres for FT-IR spectrometers, IntegratIR.
Shedding light on plant biology by Fourier transform infrared spectroscopy of pollen” by Boris Zimmermann and Achim Kohler. Currently, pollen identification is mostly done under a light microscope. FT-IR spectroscopy of pollen grains provides rapid and simple identification of pollen, with the added benefit of providing environmental information.
Now available with the new wide range MIR-FIR DLaTGS detector and the recently introduced wide range MIR-FIR beamsplitter. This provides data collection from 6000 cm–1 to 10 cm–1 in one step for all types of transmittance, reflectance and ATR measurements without the need for any beamsplitter or detector exchange.
Universal Forward Looking Reflectance Accessory
This new accessory for the Alpha FT-IR spectrometer allows for the rapid IR characterisation of almost any large or oddly shaped sample or object. The sample is placed in front of the spectrometer with accessory and a spectrum collected.
Compact research-grade FT-IR spectrometer replacing the Tensor 27/37. Uses a diode laser with a longer hold time than HeNe lasers. The IR source is electronically stabilised for longer exposure times. For regulated industries, fully-automated test routines for OQ and PQ are available as well as 21 CFR Part 11 compliant software.
Compact spectrometer for atmospheric measurements by solar absorption spectroscopy. The CAMTracker camera-based feedback system follows the light automatically as the light source. It is portable and can operate for long periods in remote areas with little infrastructure.
Infrared microscope using a quantum cascade laser providing spectral coverage over the entire mid-IR fingerprint region designed for spectral imaging of biomedical and materials research samples. Has two IR and one visible objectives, transmission and reflection modes, a fully automated stage and instrument control and data display via an Ethernet connection to a PC.
Multiple reflection ATR for measurement of analytes at very low concentrations, to 0.5 mg mL–1 or less and volumes down to 10 µL. Both the 10-reflection diamond and 11-reflection Si configurations are compatible with nearly all FT-IR spectrometers and are enclosed for rapid purge. It is now available with trough-style and flow-through liquid cells for operation up to 200°C.
International Crystal Laboratories
Gas Cells for Small FT-IRs
ICL have created special optical interfaces for small-size FT-IR spectrometers for gas analysis. These instruments require adaptations to accommodate large accessories such as long-path gas cells. The interfaces enable use with small FT-IRs such as Bruker’s Alpha, Thermo’s iS5 and PerkinElmer’s Spectrum Two.
Portable Mid-IR ATR Spectrometers
Hand-held, battery-powered spectrometers with no moving parts. An ATR crystal is fixed into the casing. Can be configured for analysis of liquids, slurries or solids. Sphinx software has modules for chemometrics, automation, prediction and a stand-alone mode where the module runs independently of a host computer.
Mid-range FT-IR spectrometer with 60,000 : 1 signal-to-noise ratio. Can analyse small samples, from 1 mm to 10 µm. The previous model, the IRPrestige-21 recorded spectra every 5 s; the IRTRacer-100 can obtain 20 spectra per second in the optional rapid scan mode. The LabSolutions IR software connects to other laboratory hardware, such as LC and GC systems, and unifies management of the measured data. The number of spectra in the standard IR libraries has been expanded from 1000 to 12,000.
Portable FT-IR spectrometer for illicit drug analysis with a library of up to 2500 narcotics, precursors, common chemicals and cutting agents, which can easily be expanded with new drug variants. It has been designed for use by personnel of varying skill levels and requires minimal training for operation.
Thermo Fisher Scientific
iD7 ATR Accessory
ATR accessory for the Nicolet iS5 FT-IR spectrometer with a high-performance monolithic diamond. Optional zinc selenide or germanium crystals in easily swappable plates.
Isotope ratio infrared spectrometer for the continuous measurement of isotope ratios from CO2 in ambient air. Can be used in the field providing the ability to collect data continuously. Uses laser-based mid-IR spectroscopy to measure simultaneously 13C and 18O with a precision better than 0.1 ppt in minutes. Wide concentration range from 200 ppm to 100%.
“Spectral database for postage stamps by means of FT-IR spectroscopy” by Eleonora Imperio, Gabriele Giancane and Ludovico Valli will be of great interest. As well as helping to detect forgeries, FT-IR has been used to create a database which also charts the history of the technology used to create stamps. Quite rightly, they are considered by many to be works of art.
From lake ecology to biofuels—applications of Fourier transform infrared spectroscopy to algal research
“From lake ecology to biofuels—applications of Fourier transform infrared spectroscopy to algal research” is the topic of Andrew Dean, Jon Pittman and David Sigee. Algae are essential for our continued live on Earth, and FT-IR spectroscopy can increase our understanding of their physiology and biotech potential.
Report on the The Seventh International Conference of Advanced Vibrational Spectroscopy (ICAVS-7) held in Kobe, Japan.
This article describes an application of spectral imaging for the differentiation of tumour and normal cells. The authors also introduce the concept of a spectral barcode, which has had success with some tissues and has potential in others.
Single particle characterisation in biologics: from mid-infrared micro-spectroscopy and mapping to spectral imaging
The presence of “particles” in protein pharmaceuticals (biologics) can cause severe, unwanted effects in the drug. The article describes the use of mid-infrared micro-spectroscopy for the investigation and chemical characterisation of single particles in these biologics.
This Product Focus is on Infrared Spectrometers and Accessories; a number of companies have provided information on their key products, their applications and features.
Tony (A.N.) Davies and Robert Lancashire remember Bob McDonald who co-authored the first JCAMP-DX standard for infrared spectroscopy.
In principle, electromagnetic SEIRS should be as strong as electromagnetic surface-enhanced Raman scattering (SERS) but, in SEIRS, disturbing fluorescence is absent. In order to get maximum IR vibrational signal enhancement for sensing of rare molecules, strong resonant scattering of plasmonic objects is recommended.
A. Roque, I. Ponte and P. Suau look at “Infrared spectroscopy of nucleoprotein complexes”. The advantages of IR spectroscopy have allowed them to determine the structure of linker histones and protamines as they interact with DNA. Linker histones are involved with the condensation of the thick chromatin fibre and are believed to have a regulatory role in transcription through the modulation of chromatin higher order structure.
Reverse engineering of polymeric multilayers using AFM-based nanoscale IR spectroscopy and thermal analysis
It is possible to obtain both infrared spectra and thermal analysis data of individual layers in a cross-sectioned multilayer film. Since both techniques are AFM-based, the topographical features can be readily linked to the spectroscopic and thermal data at a much higher spatial resolution than previously achievable.
In the chemical industry, heterogeneous catalysis is vital for the manufacture of basic or fine chemicals, in catalytic converters of exhaust gas and for the chemical storage of solar energy. A new infrared spectroscopy method can study processes at surfaces of oxides used as catalysts.