Atomic / Ezine
Heavy metal: Simultaneous detection, extraction
Date: Sep 15, 2011
Author: David Bradley
A novel approach to detection of toxic metal ions based on amino-functionalized gold nanoparticles not only provides analytical data on contaminated aqueous samples, but at the same time allows the ions to be extracted from the sample. Atomic absorption spectroscopy verifies the detection of heavy metals down to picomolar concentrations.
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Journal Highlight: Prostate cancer outcome and tissue levels of metal ions
Date: Sep 5, 2011
Author:
ICP-MS was used for the quantification of Cd, Fe, Zn, and Se ions in prostatectomy samples, revealing an association between low Zn and low Fe prostate tissue levels and biochemical recurrence in prostate cancer.
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Snap happy: Digital camera to oust atomic spectrometer?
Date: Aug 15, 2011
Author: David Bradley
Researchers in Spain are hoping that a standard digital camera is the perfect alternative to expensive and sophisticated laboratory instrumentation for some analytical applications. They have demonstrated how it can be used to determined potassium and magnesium concentrations and water hardness and validated the results against conventional AAS measurements.
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Journal Highlight: A novel alkali metals/strontium co-substituted calcium polyphosphate scaffolds in bone tissue engineering
Date: Aug 1, 2011
Author:
Potassium or sodium/strontium co-substituted calcium polyphosphate has been developed for use as a bone repairing scaffold in the orthopedic field, giving higher cell proliferation rates and good compress resistant strength.
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Down to earth: Nanotechnology turns the worm
Date: Jul 15, 2011
Author: David Bradley
Inductively coupled plasma atomic emission spectroscopy (ICP-AES) has been used in the testing of uptake and toxicity of titania nanoparticles in earthworms as a marker of potential ecological harm.
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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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