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Hydrogen from silicon: Just add water

Date: Feb 1, 2013

Author: David Bradley

Two techniques, X-ray photoelectron spectroscopy (XPS) and time-of-flight-secondary-ion-mass-spectrometry (TOF-SIMS), have been used in parallel to show how adding water to silicon can generate hydrogen. The work might take us another step closer to the so-called carbon-free hydrogen economy.

Read More thumbnail image: Hydrogen from silicon Just add water

Fading dyes: Crystal violet degradation under UV light

Date: Jan 16, 2013

Author: Steve Down

The full range of crystal violet photodegradation products have been identified by mass spectrometry, shedding light on the discolouration of historical artefacts and works of art.

Read More thumbnail image: Fading dyes Crystal violet degradation under UV light

Journal Highlight: Laser diode thermal desorption mass spectrometry for the analysis of quinolone antibiotic residues in aquacultured seafood

Date: Jan 14, 2013

Author: spectroscopyNOW

Flumequine, oxolinic acid and nalidixic acid were extracted from catfish, shrimp and salmon and analysed by laser diode thermal desorption atmospheric pressure chemical ionization with tandem mass spectrometry.

Read More thumbnail image: Journal Highlight Laser diode thermal desorption mass spectrometry for the analysis of quinolone antibiotic residues in aquacultured seafood

Miniature mass spec for space: Prototype dual laser TOF for aromatic organic compounds

Date: Jan 7, 2013

Author: Steve Down

A novel miniature time-of-flight mass spectrometer featuring two-step laser desorption/ionisation has been developed by scientists in the US for planetary research, aimed specifically at the identification of polycyclic aromatic compounds.

Read More thumbnail image: Miniature mass spec for space Prototype dual laser TOF for aromatic organic compounds

Going wild: Pesticide screening method for poisoned wildlife and pets

Date: Dec 16, 2012

Author: Steve Down

Suspected poisoning of wildlife, pets and livestock can be rapidly assessed by a new multi-residue LC/MS/MS method for pesticides developed by Scottish government chemists.

Read More thumbnail image: Going wild Pesticide screening method for poisoned wildlife and pets

Journal Highlight: Implementation of proton transfer reaction-mass spectrometry (PTR-MS) for advanced bioprocess monitoring

Date: Dec 10, 2012

Author: spectroscopyNOW

The implementation of PTR-MS technology for on-line monitoring of volatile organic compounds in the off-gas of bioreactors is described, including the development of an interface between the bioreactor and an analyzer for continuous sampling.

Read More thumbnail image: Journal Highlight Implementation of proton transfer reaction-mass spectrometry PTR-MS for advanced bioprocess monitoring

Single cell spectrometry: Inkjet printing and ambient mass spectrometry for lipid profiling

Date: Dec 2, 2012

Author: Steve Down

The phospholipids in single cells that have been printed using a custom inkjet printer were analysed by liquid extraction surface analysis coupled to nanospray mass spectrometry, allowing cell types to be differentiated.

Read More thumbnail image: Single cell spectrometry Inkjet printing and ambient mass spectrometry for lipid profiling

Bacterial identity parade: Volatile profiles classify Gram-negative species within minutes

Date: Nov 15, 2012

Author: Steve Down

Gram-negative bacteria can be identified and distinguished after just 24 hours of growth via their volatile compound profiles using ion/molecule reaction mass spectrometry in a test that takes just 3 minutes and is suitable for clinical testing.

Read More thumbnail image: Bacterial identity parade Volatile profiles classify Gram-negative species within minutes

Journal Highlight: Fragmentation of toxicologically relevant drugs in negative-ion liquid chromatography-tandem mass spectrometry

Date: Nov 12, 2012

Author: spectroscopyNOW

The class-specific fragmentations of toxicologically relevant compounds in negative-ion MS–MS have been reviewed by collating more than 500 spectra from three libraries.

Read More thumbnail image: Journal Highlight Fragmentation of toxicologically relevant drugs in negative-ion liquid chromatography-tandem mass spectrometry

Tea protection racket: Protectants compensate for matrix effects in pesticides analysis of tea

Date: Nov 1, 2012

Author: Steve Down

A set of protectants has been evaluated for the GC/MS analysis of pesticides in three different types of tea to compensate for the matrix effects that complicate the gas chromatographic behaviour.

Read More thumbnail image: Tea protection racket Protectants compensate for matrix effects in pesticides analysis of tea
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