Atomic / Ezine
The application of ICP MS in clinical pharmacological oncology research
Date: Mar 3, 2008
Author:
A systematic review is given of publications on the analysis of platinum- and ruthenium-containing anticancer agents using ICP-MS, focused on the determination of total metal concentrations and the speciation of metal compounds in biological fluids, DNA- and protein-adducts, and environmental samples.
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Fibre, fibre burning bright
Date: Feb 15, 2008
Author: David Bradley
A European research team has developed novel strategies for the rapid trace element analysis of metals in polyamide synthetic fibres by graphite furnace atomic absorption spectrometry and inductively coupled plasma mass spectrometry. Their method allows the accurate determination for quality control of polyamide products containing titanium dioxide as an optical brightener.
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Quantification issues of trace metals on silicon oxide and nitride films by VPD-ICP-MS and VPD-GF-AAS
Date: Feb 4, 2008
Author:
This article discusses the approaches to eliminate interferences caused by the silicon matrix during vapor-phase decomposition pretreatment for collecting trace metal contaminants on the surface of a silicon wafer.
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Running up against the buffers
Date: Jan 15, 2008
Author: David Bradley
US researchers have developed a simple solution to the problem of buffer failure, a chemical conundrum that has plagued researchers in laboratories across the world for decades. Their new approach takes an apparently obviuous tack that apparently no one has thought obvious enough to try before.
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Determination of lead, iron and nickel in water and vegetables after pre-concentration with Aspergillus niger on silica
Date: Jan 7, 2008
Author:
A method for the determination of Fe(III), Pb(II), and Ni(II) by flame atomic absorption spectrometry (FAAS) after preconcentrating on a column containing Aspergillus niger loaded on silica gel 60 (Biosorbent) is described.
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Composting with chitosan and cat litter composite
Date: Dec 15, 2007
Author: David Bradley
The viability of a novel slow-release system for a nitrogen-phosphorus-potassium (NPK) agricultural fertiliser has been tested using atomic absorption spectrometry and shown to have excellent release properties.
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Comparison of artificial neural networks with PLS regression for simultaneous determinations by ICP-AES
Date: Dec 1, 2007
Author:
The simultaneous determination of several elements (U, Ta, Mn, Zr and W) by ICP-AES in the presence of spectral interference was performed using chemometrics methods, using a true comparison between artificial neural networks and partial least squares regression.
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Garlic protection
Date: Nov 15, 2007
Author: David Bradley
Atomic absorption spectroscopy has been used to analyse the distribution of lead and cadmium in different mouse organs including liver, kidney, spleen, heart, and blood, after treatment with different aqueous concentrations of garlic. The results suggest that garlic could help protect against organ damage caused by these toxic heavy metals.
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CZE for the speciation of arsenic in aqueous soil extracts
Date: Nov 1, 2007
Author:
Two separation methods using CZE with UV detection were developed for the determination of the most common inorganic and methylated arsenic species and some phenylarsenic compounds, based on hydrodynamic injection and large-volume sample stacking with polarity switching.
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Stop! Atoms
Date: Oct 15, 2007
Author: David Bradley
An "atomic coilgun" that can stop atoms in their tracks using a sequence of pulsed magnetic fields has been developed by US scientists. The device opens up the possibility of slowing and trapping atoms regardless of atomic number, which is not possible with laser trapping that works only for certain atoms.
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