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Metallic environmental mops

Date: Nov 15, 2009

Author: David Bradley

Inductively coupled plasma spectroscopy and mass spectrometry revealed that natural metal chelators, so-called siderophores, which are produced by bacteria and plants, make much better absorbers of cadmium, and potentially other toxic metals, than synthetic EDTA, and so could improve the efficiency of phytoremediatioon systems.

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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.

Read More thumbnail image: Determination of lead content in medicinal plants by pre-concentration flow injection analysis-flame atomic absorption spectrometry

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.

Read More thumbnail image: Telluride temperature test just right

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.

Read More thumbnail image: Determination of trace elemental concentrations in document papers for forensic comparison using ICP-MS

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.

Read More thumbnail image: Extracting the dental lead

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.

Read More thumbnail image: Determination of nickel calcium and magnesium in xylem sap by flame atomic absorption spectrometry using a microsampling technique

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.

Read More thumbnail image: The analysis of heavy metals in Chinese herbal medicine by flow injection-mercury hydride system and graphite furnace atomic absorption spectrometry

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.

Read More thumbnail image: Marine surfactant soaks up heavy metal

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.

Read More thumbnail image: Determination of selenium and tellurium in basalt rock reference materials by isotope dilution hydride generation-ICP-MS
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