Atomic / Ezine
Journal Highlight: The development of analytical and interpretational protocols to facilitate the provenance establishment of polycarbonate headlamp lens material
Date: Jan 31, 2011
Author:
In this study, laser ablation inductively coupled plasma mass spectrometry has been applied to the analysis of polycarbonate headlamp lenses with multivariate chemometrics techniques utilized to facilitate interpretation of the data.
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Bacterial sensor: pathogen detected with fluorescence
Date: Jan 15, 2011
Author: David Bradley
A new biosensor platform for the detection of bacterial pathogens, specifically demonstrated with E coli, has been developed based on long-range surface plasmon-enhanced fluorescence spectroscopy (LRSP-FS).
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Journal Highlight: Biocorrosion and uptake of titanium by human osteoclasts
Date: Jan 3, 2011
Author:
This study investigated the ability of human osteoclasts to grow on titanium and aluminum, and directly corrode the metals leading to the release of corresponding metal ions, which are believed to cause inflammatory reactions and activate osteoclastic differentiation.
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Arsenic contamination: groundwater study redux
Date: Dec 15, 2010
Author: David Bradley
Chronic arsenic poisoning is perhaps one of the most insidious environmental disaster affecting tens of millions of people on the Indian subcontinent and elsewhere. An ongoing study of the problem of arsenic-contaminated drinking water uses atomic absorption spectroscopy to underpin its analytical data.
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Journal Highlight: Trace element analysis of rough diamond by LA-ICP-MS: A case of source discrimination?
Date: Nov 29, 2010
Author:
A novel LA-ICP-MS methodology was developed for analyzing ultra-trace element impurities in rough diamond for origin determination ("profiling") using binomial logistic regression which produced a better overall correct classification than linear discriminant analysis.
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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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