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Heavy metal: Not so fishy

Date: Nov 15, 2013

Author: David Bradley

There is ongoing concern regarding levels of heavy metal contamination of edible fish. However, a study of Atlantic species by a team in Morocco using atomic absorption spectroscopy shows that although cadmium, lead and mercury are present, concentrations are well below the safety thresholds published by the European Union.

Read More thumbnail image: Heavy metal Not so fishy

Journal Highlight: SPE of lead and copper on a polyhydroxybutyrate-b-polydimethyl siloxane block copolymer disc and FAAS determination of them in water and food samples

Date: Nov 4, 2013

Author: spectroscopyNOW

Cu(II) and Pb(II) were extracted from food and water by SPE as their Sudan III chelates on a block copolymer disc for determination by flame atomic absorption spectrometry.

Read More thumbnail image: Journal Highlight SPE of lead and copper on a polyhydroxybutyrate-b-polydimethyl siloxane block copolymer disc and FAAS determination of them in water and food samples

Laser fluorescence: It's a gas

Date: Oct 15, 2013

Author: David Bradley

Using what they refer to as off-the-shelf, US researchers have developed a laser fluorescence spectroscopic technique to measure how and when nanocrystals adsorb and release hydrogen or other gases. The new investigative approach could be useful in research into lower-cost catalytic converters for vehicle exhausts, the future development of fuel cell technologies and improved gas sensors for industrial and anti-terrorism applications.

Read More thumbnail image: Laser fluorescence Its a gas

Journal Highlight: Challenges in the analysis of heterogeneous pottery by LA–ICP–MS: A comparison with INAA

Date: Sep 30, 2013

Author: spectroscopyNOW

A pilot study assessing the use of LA–ICP–MS to analyse the clay matrix in pottery revealed the challenges of the technique for highly heterogeneous materials.

Read More thumbnail image: Journal Highlight Challenges in the analysis of heterogeneous pottery by LAICPMS A comparison with INAA

Explosive laser: Shedding light on bombs

Date: Sep 15, 2013

Author: David Bradley

A laser that can detect microscopic traces of explosive chemicals on clothing and luggage has been developed by researchers at Michigan State University. The development opens up the possibility of the accurate identification of terror suspects are baggage that may represent a bomb threat at airports and other security checkpoints.

Read More thumbnail image: Explosive laser Shedding light on bombs

Journal Highlight: Water phytoremediation of cadmium and copper using Azolla filiculoides Lam. in a hydroponic system

Date: Sep 2, 2013

Author: spectroscopyNOW

The utility of Azolla filiculoides growing in a hydroponic system for the phytoremediation of continental water polluted with cadmium and copper was evaluated, using FAAS to measure metal levels in the plant after 7 days of exposure.

Read More thumbnail image: Journal Highlight Water phytoremediation of cadmium and copper using Azolla filiculoidesLam_ in a hydroponic system

Magnetic switch: Terahertz controller

Date: Aug 15, 2013

Author: David Bradley

A terahertz laser developed at the Paul Scherrer Institute in Switzerland could be used to control the magnetization in a material on a timescale of just picoseconds. The extremely short pulses of electromagnetic radiation allow the magnetization to be changed with only a tiny delay opening up a new route to on-off switching in such materials for microelectronics and computing applications.

Read More thumbnail image: Magnetic switch Terahertz controller

Journal Highlight: The survival of gunshot residues in cremated bone: An inductively coupled plasma optical emission spectrometry study

Date: Aug 5, 2013

Author: spectroscopyNOW

ICP-OES analysis of gunshot residues in cremated bone is very sensitive and reliable and can be an appropriate nondestructive method for detecting residues on difficult and delicate substrates.

Read More thumbnail image: Journal Highlight The survival of gunshot residues in cremated bone An inductively coupled plasma optical emission spectrometry study

Laser life: Astatine inspected

Date: Jul 15, 2013

Author: David Bradley

Laser spectroscopy has been used by scientists at CERN and Mainz to investigate the nature of the rare and artificially produced radioactive element astatine for the first time.

Read More thumbnail image: Laser life Astatine inspected

Journal Highlight: Waste glass, vessels and window-panes from Thamusida (Morocco): Grouping natron-based blue-green and colourless Roman glasses

Date: Jul 2, 2013

Author: spectroscopyNOW

A collection of window-panes, vessels and alleged waste from Thamusida has been characterised by several techniques and compared with naturally coloured and colourless glasses of both Roman and later ages.

Read More thumbnail image: Journal Highlight Waste glass vessels and window-panes from Thamusida Morocco Grouping natron-based blue-green and colourless Roman glasses
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