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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.

Read More thumbnail image: Application of laser ablation multicollector ICPMS for the measurement of calcium and lead isotope ratios in packaging for discriminatory purposes

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.

Read More thumbnail image: Direct and rapid determination of ultratrace heavy metals in solid plant materials by ET-AAS ultrasonic-assisted slurry sampling

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.

Read More thumbnail image: Accurate elemental analysis of metal-containing polymer latexes using ICP-optical emission spectrometry

Nano cell

Date: Jun 15, 2010

Author: David Bradley

An international team of scientists have developed a new nano-cell for laser spectroscopy that opens up new ways to study absorption and fluorescence of metal vapours

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Accumulation of toxic metals (Pb and Cd) in the sea urchin Diadema aff. antillarum Philippi, 1845, in an oceanic island (Tenerife, Canary Islands)

Date: Jun 7, 2010

Author:

The levels of lead and cadmium in the internal tissue and exoskeleton of sea urchins, collected from their natural habitat, were measured by graphite furnace atomic absorption spectrometry.

Read More thumbnail image: Accumulation of toxic metals Pb and Cd in the sea urchin Diadema aff_ antillarum Philippi 1845 in an oceanic island Tenerife Canary Islands

Aquatic aluminium all-clear

Date: May 15, 2010

Author: David Bradley

Inductively coupled plasma atomic emission spectroscopy was used to track the path of an aluminium contaminant in water as it travels through the food chain. The study indicates that the toxic metal accumulates only in the inedible parts of shellfish.

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Relating tooth- and blood-lead levels in children residing near a zinc-lead smelter in India

Date: May 3, 2010

Author:

The present study aimed to relate tooth-lead and blood-lead levels in children residing near a zinc-lead smelter in India, and to evaluate the effectiveness of primary teeth as bioindicators of life-long lead exposure.

Read More thumbnail image: Relating tooth- and blood-lead levels in children residing near a zinc-lead smelter in India
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