Atomic / Ezine
Leaden blood spot
Date: Jul 15, 2007
Author: David Bradley
A single drop of blood absorbed on to a filter paper is all that is needed for a new test for lead based on solid sampling-graphite furnace atomic absorption spectrometry (SS-GFAAS). The minimally-invasive method would allow many more people to be tested quickly for epidemiological studies and following safety incidents involving the toxic metal.
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Determination of 25 elements in lichens by sector field ICPMS and microwave-assisted acid digestion
Date: Jul 2, 2007
Author:
A simple and efficient digestion method for rapid sample preparation and quantification of 25 chemical elements in lichens by sector field inductively coupled plasma mass spectrometry is described, using microwave-assisted acid digestion at atmospheric pressure.
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On-chip atomic spectroscopy
Date: Jun 15, 2007
Author: David Bradley
Atomic spectroscopy can be performed with integrated optics on a chip for the first time, according to US researchers, who passed a beam of light through a rubidium vapor cell integrated into the chip.
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Preconcentration and determination of trace heavy metals in water using a membrane disk and FAAS
Date: Jun 4, 2007
Author:
A fast and simple method for preconcentrating heavy metal dications from natural waters for flame atomic absorption spectrometry has been successfully applied to the recovery and determination of heavy metal ions in different water samples.
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Heavy metal plants
Date: May 15, 2007
Author: David Bradley
Herbal medicine is a global phenomenon, a multibillion dollar industry, and its raw materials phytochemicals are widely used as the precursors for regulated pharmaceutical products. One problematic area on both sides is in product purity, with contamination by toxic heavy metals one of the most common complaints.
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Simultaneous preconcentration of copper, nickel, cobalt and lead ions prior to their flame atomic absorption spectrometric determination
Date: May 1, 2007
Author:
A sensitive and simple method for the simultaneous preconcentration of nutritionally important minerals in real samples is based on the adsorption of metal dications on 4-propyl-2-thiouracil loaded on activated carbon.
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Reactivity of ashes from biomass combustion plant in biomass combusting atmospheres
Date: Apr 20, 2007
Author:
Exposure tests were carried out to study the reactivity of filter and cyclone ashes from a biomass combustion plant. The changes of C-, Cl- and S-content of the exposed ashes were analyzed by inductively coupled plasma atomic absorption spectroscopy.
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Organic atomic kiwi
Date: Apr 15, 2007
Author: David Bradley
Could the claims of the so-called "organic" farming movement be true after all? Analysis of the antioxidant, mineral, and nitrate composition of kiwifruit would suggest so. A comprehensive study of the constituents of organically grown kiwifruit reveal that organically grown kiwifruit contain more health-promoting factors than those grown using conventional methods.
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Inductively coupled plasma mass spectrometry (ICP MS): a versatile tool
Date: Apr 2, 2007
Author:
This special-feature, tutorial article presents the principle and advantages of ICP MS, highlighting these using examples from recently published investigations
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Life and death metal
Date: Mar 15, 2007
Author: David Bradley
David Koppenaal of Pacific Northwest National Laboratory and Gary Hieftje of Indiana University believe metallomics could be the next big challenge facing atomic spectrometry. They suggest the techniques encompassed by the term are well equipped to rise to a vibrant scientific challenge.
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