Atomic / Ezine
Fishy measurements: AAS provides baseline heavy metal load
Date: Nov 15, 2010
Author: David Bradley
Samples of tinned sardines, originating from six countries have been analyzed for total arsenic, cadmium, lead and mercury content using AAS. The analysis provides a useful baseline for a foodstuff - small pelagic fish - that could become increasingly important in a possible sustainable future.
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Lunar meteorite regolith breccias: An in situ study of impact melt composition using LA-ICP-MS with implications for the composition of the lunar crust
Date: Nov 1, 2010
Author:
A compositional study was carried out of the impact melt and impact melt breccia clast populations of meteorites representing regions of the lunar surface that were not visited by the US Apollo or Soviet Luna sample return missions, using in situ electron microprobe and LA-ICP-MS techniques.
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Lead extraction with green tea: AAS reveals efficacious lead detox
Date: Oct 15, 2010
Author: David Bradley
Atomic absorption spectroscopy and other techniques have been used to study the effects of green tea extract on reducing lead toxicity in laboratory rats.
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An assessment on metal sources by multivariate analysis and speciation of metals in soil samples using the BCR sequential extraction procedure
Date: Oct 4, 2010
Author:
The concentrations of Cr, Mn, Fe, Ni, Cu, Zn and Pb in soil samples from an agricultural area were determined by flame atomic absorption spectrometry, revealing principal influences derived from natural, airborne emissions from domestic heating and traffic.
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A comet's tale of life on earth
Date: Sep 15, 2010
Author: David Bradley
Ab initio molecular dynamics simulations and detailed analysis hint at how conditions on the early earth might have been ripe for a cometary impact to generate small organic molecules. The study suggests that the formation of molecules akin to the simple amino acid glycine may have been viable. Follow-up spectroscopic studies may demonstrate the validity of the hypothesis.
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Application of laser ablation multicollector ICPMS for the measurement of calcium and lead isotope ratios in packaging for discriminatory purposes
Date: Sep 2, 2010
Author:
The potential of high-precision calcium and lead isotope ratio measurements using LA-MC-ICP-MS to aid distinction between four genuine and five counterfeit pharmaceutical packaging samples and further classification of counterfeit packaging samples has been evaluated.
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Attosecond atoms
Date: Aug 15, 2010
Author: David Bradley
Atoms reacting on the femtosecond timescale can now be observed with unprecedented detail using a new laser spectroscopy technique reported recently in Nature.
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Direct and rapid determination of ultratrace heavy metals in solid plant materials by ET-AAS ultrasonic-assisted slurry sampling
Date: Aug 2, 2010
Author:
A new procedure for direct analysis of copper, nickel, cadmium and lead at very low concentration levels in leaves based on ET-AAS with introduction of samples as a slurry gave the best detection limits reported in the literature.
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Milking AAS for iodine content
Date: Jul 15, 2010
Author: David Bradley
A simple, precise and accurate automatic method for determinating total iodine concentration in milk products based on indirect atomic absorption spectrometry could improve studies of this essential micronutrient.
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Accurate elemental analysis of metal-containing polymer latexes using ICP-optical emission spectrometry
Date: Jul 5, 2010
Author:
The use of ICP-OES to determine the metal content of metal complex-containing colloidal dispersions gave accurate results only following the addition of surfactant to the dispersions.
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