Atomic / Ezine
Journal Highlight: Co and Cr accumulation in hair after metal-on-metal hip resurfacing arthroplasty
Date: Jul 4, 2011
Author:
Co and Cr levels in scalp hair have been measured by inductively coupled plasma-mass spectrometry as indicators for metal levels in the body after hip resurfacing arthroplasty (HRA). Both metals were greatly increased after metal-on-metal HRA.
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Brazilian lead: Pewterware reveals illegal heavy metal
Date: Jun 15, 2011
Author: David Bradley
It is illegal to use lead as an additive in the manufacture of pewter kitchenware, tableware, drinking cups. However, work in Brazil using atomic absorption spectroscopy not only provides a benchmark for standardizing tests for lead, cadmium and other toxic metals, but reveals that some manufacturers are flouting the law.
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Journal Highlight: Analytical methods for heavy metals in herbal medicines
Date: Jun 6, 2011
Author:
In this review, analytical methods for analysis of heavy metals in herbal medicines are discussed, including atomic absorption spectrometry, inductively coupled plasma optical emission spectrometry or mass spectrometry, X-ray fluorescence spectrometry, high-performance liquid chromatography, differential pulse polarography, neutron activation analysis and anodic stripping voltammetry.
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Pharmaceutical toxicity: AAS and other techniques measure pharma heavy metal
Date: May 15, 2011
Author: David Bradley
Metals and metalloid impurities are an increasing focus for pharmaceutical regulators anticipating high standards of QC/QA for pharmaceuticals. A review by a team at Bristol-Myers Squibb assesses the various techniques available to the industry. The report offers insights into how these various applications can be used and ultimately how they might address concerns about metal toxicity in raw materials, intermediates, active pharmaceutical ingredients and final drug products.
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Journal Highlight: Sputum zinc concentration and clinical outcome in older asthmatics
Date: May 2, 2011
Author:
Labile and total zinc were measured in sputum and plasma of subjects with or without asthma and correlated with symptoms, asthma severity, lung function and airway hyper-responsiveness.
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Explosive fingerprints: spectroscopy IDs TNT in dabs
Date: Apr 15, 2011
Author: David Bradley
Optical catapulting-laser-induced breakdown spectroscopy has been used to successfully detect residues of common explosives in human fingerprints, according to researchers from Egypt and Spain.
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Journal Highlight: Traceability along the production chain of Italian tomato products on the basis of stable isotopes and mineral composition
Date: Apr 4, 2011
Author:
The variability of stable isotope ratios and mineral composition in tomato and derivatives was determined along the production chain (juice, passata and paste) in order to evaluate the possibility of tracing their geographical origin.
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Waste water slip up: AAS assesses efficacy of banana peel remediation
Date: Mar 15, 2011
Author: David Bradley
Atomic absorption spectroscopy is being used to assess how well banana peel can filter heavy metals, such as copper, from waste water. Preliminary results look promising and could lead to an ecologically sound method of industrial cleanup that uses a renewable but otherwise wasted source material.
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Journal Highlight: Application of three spectrometric methods to total selenium determination in postmortem material in a case of acute selenium compound poisoning
Date: Mar 7, 2011
Author:
Atomic absorption spectrometry with electrothermal atomization, atomic fluorescence spectrometry with hydride generation and spectrofluorimetry were used for the determination of total selenium in postmortem biological samples in a case of acute selenium compound poisoning.
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Chemistry in the greenhouse: CO2 conversion
Date: Feb 15, 2011
Author: David Bradley
Technologies that can use carbon dioxide as a chemical feedstock are high on the agenda in the face of rising atmospheric levels of the greenhouse gas. A novel iron-based catalytic process studied using inductively coupled plasma (ICP) atomic emission spectrometry shows how carbon dioxide can be converted into the industrially useful formic acid at an 80% yield.
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