Atomic / Ezine
Heavy metals in your hibiscus: Infusion refusal
Date: May 15, 2013
Author: David Bradley
Inductively coupled plasma optical emission spectrometry (ICP-OES) and flame atomic absorption spectroscopy (FAAS) have been used to determine concentrations of metals in digests and infusions of Hibiscus sabdariffa (petals), Rosa canina (receptacles), Ginkgo biloba (leaves), Cymbopogon citratus (leaves), Aloe vera (leaves) and Panax ginseng (roots).
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Journal Highlight: Elemental ion release from fixed restorative materials into patient saliva
Date: Apr 29, 2013
Author: spectroscopyNOW
The elemental ion release of Cu, Zn, Pd, Ag and Au from fixed gold alloy crowns and Al and Si from ceramic crowns into patient saliva was studied by inductively coupled plasma mass spectrometry.
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Plumb job for polymer: Takes the lead
Date: Apr 15, 2013
Author: David Bradley
Researchers in Iran have used flame atomic absorption spectrometry (FAAS) to test a novel imprinted polymer designed to absorb contaminating lead ions from fresh fruit and vegetables.
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Journal Highlight: Direct determination of arsenic in beet sugar molasses using nickel as chemical modifier by ETAAS
Date: Apr 1, 2013
Author: spectroscopyNOW
A simple electrothermal atomic absorption spectrometric method was described for the direct determination of arsenic in sugar beet molasses samples, using nickel nitrate as the chemical modifier.
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Heavy metal veggies: ICP-MS worth a nickel
Date: Mar 15, 2013
Author: David Bradley
The presence of heavy metal ions of nickel and chromium in vegetables, including potatoes, carrots and onions, irrigated with polluted water is revealed using X-series inductively coupled plasma mass spectrometry.
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Journal Highlight: Modification and characterization of polyacrylonitrile fiber by chelating ligand for preconcentration and determination of neodymium ion in biological and environmental samples
Date: Mar 4, 2013
Author: spectroscopyNOW
Chelating fibers of polyacrylonitrile prepared from iminodiacetic acid have been used for the preconcentration and determination of trace Nd(III) ions from human biological fluid and environmental waters by ICP-AES.
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Shrinking the proton: Laser scan
Date: Feb 15, 2013
Author: David Bradley
An international research team has confirmed the surprisingly small radius of the proton using laser spectroscopy on muonic hydrogen. The new results fuel the debate as to whether the discrepancies observed can be explained by standard physics, for example an incomplete understanding of the systematic errors that are inherent to all measurements, or whether they are due to new physics, or a higher complexity than previously assumed for the structure of the proton.
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Journal Highlight: Ion implanted inconel alloy – SIMS and GDMS depth profile analysis
Date: Feb 4, 2013
Author: spectroscopyNOW
SIMS and GDMS have been applied to the depth profile analysis of ion-implanted nickel alloy inconel 600, giving similar results for implanted N, Ti and Y.
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Counting on nano control: Molecular machines
Date: Jan 15, 2013
Author: David Bradley
STM microscopy and attendant I-V spectroscopy at the atomic scale has allowed an international team to take the next step in creating nanoscale machines. Their work now reveals a multi-component molecular motor that can be moved clockwise and anticlockwise.
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Journal Highlight: Quantitative imaging of the tissue contrast agent [Gd(DTPA)]2− in articular cartilage by laser ablation ICPMS
Date: Jan 7, 2013
Author: spectroscopyNOW
An analytical protocol is described for imaging the magnetic resonance tissue contrast agent [Gd(DTPA)]2− in articular cartilage, including sample preparation, LA-ICP-MS measurements and quantification of Gd images.
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