In this article we learn of a new definition for “bath salts”, and how modern mass spectrometry instrumentation can provide rapid and quantitation of these “designer” drugs.
Single-walled carbon nanotubes and graphene are the subjects of great interest at present. The Tip-enhanced Raman mapping (TERM) technique is most useful for their study and can even find defects in a single sheet of graphene or a single nanotube with a spatial resolution of ~35 nm.
Both the size and chemical composition of airborne particles have an effect on human health. Whilst the effects of size have been much studied, many of the toxic chemicals in particles are at very low concentration and have been less studied. Monitoring their composition and concentration over time helps to determine their source. Synchrotron radiation-induced XRF spectrometry proves to be a good tool for this purpose.
Most of us are increasingly aware of the dangers of the modern diet and realise that salt intake should be kept low. It turns out that bread is a major contributor to our salt intake. However, without it, the bread is not particularly palatable. One trick is to distribute the salt unevenly throughout the bread, but the salt then needs to be encapsulated to prevent it dissolving. This article describes the use of laser-induced breakdown spectroscopy to monitor this distribution and help develop methods to reduce the salt content of bread whilst maintaining the taste.
Fuels and the taxes raised from their sale are a big business around the world. To control smuggling, counterfeiting, theft and product diversion, markers can be placed in the fuel. The use of a SERS active compounds as markers is described as well as the development of a portable instrument for detection of the markers in the field.
- Nuclear magnetic resonance-based approach to fruit characterisation: the case studies of kiwifruits and peaches
- Qualitative and quantitative assessment of acetylated wood using infrared spectroscopic methods and multivariate data analysis
- Pyrolysis, spectroscopy and extraterrestrial organic matter
- G-SIMS—a powerful method for simplifying and interpretation of complex secondary ion mass spectra
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