Infrared Spectroscopy / Ezine
Organic atmospheric: FTIR assesses pollution
Date: Mar 1, 2011
Author: David Bradley
Fourier transform infrared spectroscopy has been used to analyse submicron particles from 14 regions in North America, Asia, South America, and Europe. The measurements were used to identify characteristic organic functional group compositions of fuel combustion, terrestrial vegetation, and ocean bubble bursting sources. The information helps account for more than a third of organic mass in the atmosphere.
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Breath test: infrared approach detects exhaled chemicals
Date: Feb 1, 2011
Author: David Bradley
Trace analytes can be detected in the breath using near infrared Fourier transform broadband cavity enhanced absorption spectroscopy. This opens up a whole new area of medical diagnostics and health research.
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Journal Highlight: Silk grafting with methacrylamide: A near-infrared spectroscopy study
Date: Jan 31, 2011
Author:
Near infrared (NIR) spectroscopy was used for the quantitative determination of methacrylamide (MAA) in silk yarns and in exhaust baths after grafting. A correlation between the grafting yield and NIR spectra of MAA grafted yarns was obtained.
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Conserving conservation: Spectroscopic insights into fading
Date: Jan 5, 2011
Author: David Bradley
Improving storage and exposure conditions in conservation of artefacts is crucial to suppressing the fading and degradation of dyes and other components of paintings. Researchers have now used several analytical techniques, including attenuated total reflectance infrared spectroscopy, Raman spectroscopy, reflectance UV-Vis spectroscopy, X-ray fluorescence spectroscopy and optical microscopy, to investigate different conditions on common pigments.
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Journal Highlight: Pharmaceutical applications of separation of absorption and scattering in near-Infrared spectroscopy (NIRS)
Date: Jan 3, 2011
Author:
This review paper surveys the multiple techniques reported to date on the separation of NIR absorption and scattering within pharmaceutical applications, focusing on the instrumentations, mathematical approaches used to separate absorption and scattering and related pharmaceutical applications.
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The pros and cons of inhaled nanoparticles: IR fluorescence reveals all
Date: Dec 1, 2010
Author: David Bradley
A new imaging system based on near-infrared fluorescent nanoparticles can provide a real-time understanding of how such tiny particles get into the airspaces within the lungs. The description of the ebb and flow of such experimental particles could be used to help medical researchers develop therapeutic agents for treating pulmonary disease.
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Journal Highlight: Morphology, FTIR fingerprint and survivability of encapsulated lactic bacteria in simulated gastric juice and intestinal juice
Date: Nov 29, 2010
Author:
A mixture of two lactic bacteria (Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus) was encapsulated in sodium alginate and chitosan matrices and their morphological parameters were comparatively measured.
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The use of near infrared reflectance spectrometry for characterization of brown algal tissue
Date: Nov 1, 2010
Author:
NIRS calibration models were developed to measure the ecologically important tissue traits of carbon, nitrogen, and phlorotannins (secondary metabolites) in brown algae, illustrated for dried Sargassum flavicans (F. K. Mertens) C. Agardh tissue.
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Nanoparticles: target, track and treat breast cancer
Date: Nov 1, 2010
Author: David Bradley
Nanoparticles coupled to a fluorescent dye can be used to target tumour-specific molecules in breast cancer providing a way to track the particles by NIR spectroscopy, to enhance magnetic resonance imaging and to deliver an anticancer payload only to diseased cells.
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ATR-FTIR spectroscopy and chemometric analysis applied to discrimination of landrace maize flours produced in southern Brazil
Date: Oct 4, 2010
Author:
ATR-FTIR spectroscopy and principal components analysis were used in a quick screening method to discriminate flours of 26 maize landraces from southern Brazil.
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