Atomic / Ezine
Determination of lead content in medicinal plants by pre-concentration flow injection analysis-flame atomic absorption spectrometry
Date: Nov 2, 2009
Author:
A pre-concentration flow injection analysis-flame atomic absorption spectrometric system was developed to determine the lead content in medicinal plants at the ppb level.
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Telluride temperature test, just right
Date: Oct 15, 2009
Author: David Bradley
Researchers in India have used laser spectroscopy and other techniques to study a novel doped telluride glass of technological interest. The material could have potential as new kind of high temperature sensor.
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Determination of trace elemental concentrations in document papers for forensic comparison using ICP-MS
Date: Oct 5, 2009
Author:
The potential to differentiate paper samples based on trace element concentrations was investigated using ICP-MS to measure trace element concentrations of Mg, Al, Mn, Fe, Sr, Y, Ba, Ce, and Nd.
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Extracting the dental lead
Date: Sep 15, 2009
Author: David Bradley
Lead contamination in the black paper used to mask dental X-ray paper has been determined for the first time using AAS. The worrying results suggest that the used material represents an environmental waste problem requiring pre-treatment before disposal.
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Determination of nickel, calcium and magnesium in xylem sap by flame atomic absorption spectrometry using a microsampling technique
Date: Sep 7, 2009
Author:
A microsampling technique for the determination of elements in xylem sap from different plants by flame atomic absorption spectrometry was optimised in terms of sample volume and integration time.
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Toxic sunscreen testing
Date: Aug 15, 2009
Author: David Bradley
Simultaneous determination of an inorganic UV filter used in sunscreen, titanium dioxide, and several minor, trace or toxic elements has been undertaken using inductively coupled plasma atomic emission spectroscopy (ICP-AES). The multi-element analysis of sunscreen creams and lotions was compared with atomic absorption spectroscopic data.
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The analysis of heavy metals in Chinese herbal medicine by flow injection-mercury hydride system and graphite furnace atomic absorption spectrometry
Date: Aug 3, 2009
Author:
Simple and robust atomic absorption spectrometry methods were developed to determine the contents of arsenic, lead and mercury in Chinese herbal medicine products or Chinese proprietary medicine.
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Marine surfactant soaks up heavy metal
Date: Jul 15, 2009
Author: David Bradley
Atomic absorption spectroscopy (AAS) and other techniques have been used to demonstrate the effectiveness of a natural surfactant molecule in removing heavy metals from solutions for potential bioremediation applications.
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Determination of selenium and tellurium in basalt rock reference materials by isotope dilution hydride generation-ICP-MS
Date: Jul 3, 2009
Author:
A new isotope dilution-hydride generation-inductively coupled plasma-mass spectrometry method for the simultaneous determination of Se and Te has been applied to basalts and compared to previous work.
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Cannabis blow back
Date: Jun 15, 2009
Author: David Bradley
Using a highly sensitive new test (online column-switching valve liquid chromatography tandem mass spectrometry (LC-MS/MS) selected reaction monitoring (SRM) method), European scientists have found "convincing evidence" that marijuana smoke damages DNA in ways that could increase the risk of cancer.
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