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Sperm quality and aluminium: Atomic revelations

Date: Dec 15, 2014

Author: David Bradley

Could aluminium be responsible for a decades-long decline in sperm quality? Researchers in France and the UK have used graphite furnace atomic absorption spectrometry to analyse aluminium content of semen samples an found that men with "oligozoospermia" had a statistically higher aluminium concentration than others.

Read More thumbnail image: Sperm quality and aluminium Atomic revelations

Journal Highlight: Rapid cell mode switching and dual laser ablation inductively coupled plasma mass spectrometry for elemental bioimaging

Date: Dec 1, 2014

Author: spectroscopyNOW

Two different approaches to improve the limits of detection in elemental bioimaging by ICP-MS have been developed, based on two ICP-MS detectors coupled to one laser ablation system, or a single ICP-MS instrument with fast cell mode switching between individual line scans.

Read More thumbnail image: Journal Highlight Rapid cell mode switching and dual laser ablation inductively coupled plasma mass spectrometry for elemental bioimaging

Extreme isotope effects: Changing bonds

Date: Nov 15, 2014

Author: David Bradley

The effects of different isotopes present in a molecule can affect the making and breaking of chemical bonds during the course of a chemical reaction. However, work published in Angewandte Chemie uses theoretical calculations and other techniques to demonstrate that, in extreme cases, isotopic substitution can even cause a fundamental change in the type of chemical bond.

Read More thumbnail image: Extreme isotope effects Changing bonds

Journal Highlight: Towards a protocol for the trace element analysis of glass from rhyolitic shards in tephra deposits by laser ablation ICP-MS

Date: Nov 5, 2014

Author: spectroscopyNOW

LA-ICP-MS analysis of rhyolitic glass shards was carried out using small ablation craters with calibration by a silicon internal standard to allow for interferences from calcium-rich phenocrysts and avoid issues related to the ablation of the mounting resin.

Read More thumbnail image: Journal Highlight Towards a protocol for the trace element analysis of glass from rhyolitic shards in tephra deposits by laser ablation ICP-MS

No seasoning: Fluctuating flux flummoxed

Date: Oct 15, 2014

Author: David Bradley

The decay rate of certain radioactive nuclides does not fluctuate with the terrestrial seasons because of changes in the flux of solar neutrinos passing through our planet, according to new research that debunks the hypothesis.

Read More thumbnail image: No seasoning Fluctuating flux flummoxed

Journal Highlight: Investigating effects of sample pretreatment on protein stability using SEC and high-resolution continuum source AAS

Date: Oct 6, 2014

Author: spectroscopyNOW

Size-exclusion chromatography and high-resolution atomic absorption spectrometry methods have been developed and evaluated to test the stability of proteins during different storage conditions and also the effects of adsorption before and during chromatography.

Read More thumbnail image: Journal Highlight Investigating effects of sample pretreatment on protein stability using SEC and high-resolution continuum source AAS

Tera in our midst: New picture emerges

Date: Sep 15, 2014

Author: David Bradley

New research into terahertz radiation could lead to light detectors that can see below the surface of bodies, walls, and other objects, with applications in fields as diverse as mobile communications, medical imaging, chemical sensing, night vision, and security.

Read More thumbnail image: Tera in our midst New picture emerges

Journal Highlight: Optimized ultrasound-assisted emulsification-microextraction followed by ICP-OES for simultaneous determination of ytterbium and holmium in natural water

Date: Sep 1, 2014

Author: spectroscopyNOW

Ultrasound-assisted emulsification-microextraction followed by ICP-OES was used for the simultaneous extraction and determination of holmium and ytterbium ions in water with 1-(2-pyridylazo)-2-naphthol as a chelating agent.

Read More thumbnail image: Journal Highlight Optimized ultrasound-assisted emulsification-microextraction followed by ICP-OES for simultaneous determination of ytterbium and holmium in natural water

Antineutrino: Nuclear proliferation proxy

Date: Aug 15, 2014

Author: David Bradley

US scientists are looking to one of the tiniest of subatomic particles, the antineutrino, to determine whether this seemingly nondescript entity might reveal clues about illicit nuclear activity in political hotspots around the globe.

Read More thumbnail image: Antineutrino Nuclear proliferation proxy

Journal Highlight: Trace elemental imaging of coralline hydroxyapatite by laser-ablation ICPMS

Date: Aug 4, 2014

Author: spectroscopyNOW

LA–ICP–MS was employed for image mapping of the trace element distribution in a hydrothermally converted coralline hydroxyapatite material aimed for tissue-scaffolding applications.

Read More thumbnail image: Journal Highlight Trace elemental imaging of coralline hydroxyapatite by laser-ablation ICPMS
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