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This article demonstrates the capability of the near-field method to probe polymer microspheres within a protein matrix, and we present the first IRSR photothermal near-field Fourier transform infrared (FT-IR) spectrum from within an individual biological cell, which establishes the feasibility of hyperspectral mapping at sub-micrometre resolution in a practical timescale.
The application of Fourier transform infrared, near infrared and X-ray fluorescence spectroscopy to soil analysis
Jean Robertson, Charles Shand and Estefania Perez-Fernandez update us on the use of various spectroscopies for soil analysis in “The application of Fourier transform infrared, near infrared and X-ray fluorescence spectroscopy to soil analysis”. Once again developments in portable instruments lead to greater ease of use and the ability to measure far more samples. They describe the application of FT-IR, NIR and XRF spectroscopies to the development of the National Soils Inventory of Scotland, and their work in developing the use of handheld instruments, particularly FT-IR spectrometers.
The Thermo Scientific Delta Ray is a portable isotope ratio infrared spectrometer for on-site isotopic analysis.
New broad-band tuneable infrared laser is single-chip, solid-state and offers high-power rapid tuning.
Infrared spectroscopic techniques for the non-invasive and rapid quality control of Chinese traditional medicine Si-Wu-Tang
Christian Huck and co-authors look at “Infrared spectroscopic techniques for the non-invasive and rapid quality control of Chinese traditional medicine Si-Wu-Tang”. They have used benchtop mid-IR and NIR as well as portable NIR instruments for quick and non-invasive quality control of this traditional Chinese medicine. Adulterations could be detected, as well as the raw herbs and different sources of the Si-Wu-Tang. The success of the mobile NIR instrument is particularly interesting due to the growing interest in such technology for its ease-of-use and cost.
Synchrotron-based micro Fourier transform infrared mapping to investigate the spatial distribution of amorphous and crystalline calcium carbonate in earthworm-secreted calcium carbonate balls
Earthworm secretions are of interest to Mark Hodson, Liane Benning, Gianfelice Cinque, Bea Demarchi, Mark Frogley, Kirsty Penkman, Juan Rodriguez-Blanco, Paul Schofield, Emma Versteegh and Katia Wehbe in “Synchrotron-based micro Fourier transform infrared mapping to investigate the spatial distribution of amorphous and crystalline calcium carbonate in earthworm-secreted calcium carbonate balls”. Several earthworm species secrete very small granules of calcium carbonate, and the authors think these are involved in pH regulation. These granules contain different polymorphs of calcium carbonate, including the amorphous form which is very unstable in the laboratory. To investigate this they have FT-IR spectroscopy and mapping, and are continuing this work with Ca XANES.
FT-IR spectroscopy can greatly increase the amount of information that can be extracted from a protein microarray. High-quality spectra can be obtained from spots of protein no larger than the diameter of a human hair.
Using time-, energy- and angular-resolved photoelectron imaging a team of researchers has been able to make snapshots of coupled Rydberg orbitals evolving in time during an ultrafast autoionisation process.
IRsweep’s IRcell is a multipass cell for optical trace gas sensing.
Much of the exterior surface of plants is covered by the cuticle. This plays a vital role in protecting the plant from water loss, attack by pests and pathogens and damage from UV radiation. Infrared spectroscopy is very useful in characterising cuticles, as we learn in “Infrared spectroscopy as a tool to study plant cuticles” by José Heredia-Guerrero, José Benítez, Eva Domínguez, Ilker Bayer, Roberto Cingolani, Athanassia Athanassioua and Antonio Heredia. The authors point out that, whilst still in its early stages, infrared spectroscopy has provided valuable information about the functional groups, chemical structure and arrangement and interactions of plant cuticle components.
Dates and fates of pyrogenic carbon: using spectroscopy to understand a “missing” global carbon sink
Research into climate change takes many directions, but storing carbon or understanding its release from stores is extremely important. Philippa Ascough, Michael Bird, Will Meredith and Colin Snape tell us about “Dates and fates of pyrogenic carbon: using spectroscopy to understand a “missing” global carbon sink”. Pyrogenic carbon comes from the incomplete burning of biomass, and can be natural, e.g. wild fires, or man-made, e.g. the production of charcoal. The authors describe the uses of a range of spectroscopy techniques to understand the molecular structure of pyrogenic carbon and its role in the global carbon cycle..
Entries for the IRDG Chalmers and Dent Student Travel Award for a PhD to present their research at the SciX meeting.
Axiom Analytical has introduced the DMD-373 diamond ATR probe, which is similar to the existing DMD-370 but in a smaller (23 mm) diameter.
Axiom Analytical’s new DPR-212 ATR probe offers similar advantages to their DPR-210 ATR probe but in a straight, 30-cm long configuration designed to provide optical transmission of over 20%.
This product focus is on Molecular Spectroscopy.
Raman, FT-IR and ED XRF discover interesting detail of the dying in the 19th century, and maybe about trade links between Europe and Australia.
First Data Management has released the ATR Drug Kit for rapid screening of street drugs.
Telops’ Hyper-Cam Methane is an imaging Fourier Transform Infrared (FT-IR) spectrometer for remote sensing of methane (CH4).
Specac have introduced the Pearl, a high-specification, liquid transmission accessory for mid-IR and NIR sample analysis in the lab
A new infrared light source with unprecedented sensitivity allows molecular fingerprints of cancer cells.