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Banning chemicals does work: GC/MS reveals reduced levels of flame retardants in San Francisco Bay

Date: Feb 15, 2015

Author: Steve Down

The levels of polybrominated diphenyl ethers in San Francisco Bay have dropped sharply over the last ten years since their commercial use was restricted, say US researchers.

Read More thumbnail image: Banning chemicals does work GCMS reveals reduced levels of flame retardants in San Francisco Bay

Journal Highlight: Industrial alkyd resins: characterization of pentaerythritol and phthalic acid esters using integrated mass spectrometry

Date: Feb 9, 2015

Author: spectroscopyNOW

Combined GC/MS, LC/MS and flow injection analysis was adopted for the full characterisation of the esters in alkyd resins formed from the transesterication of pentaerythritol, phthalic acid and triglycerides.

Read More thumbnail image: Journal Highlight Industrial alkyd resins characterization of pentaerythritol and phthalic acid esters using integrated mass spectrometry

Cellular toxicity assays: MALDI mass spec provides new approach

Date: Feb 1, 2015

Author: Steve Down

The effects of toxic chemicals on whole cells have been exposed by the signals in MALDI mass spectrometry, providing a way for the high-throughput screening of chemical libraries for cytotoxic risk assessment.

Read More thumbnail image: Cellular toxicity assays MALDI mass spec provides new approach

Reactive paper spray: PAH quinones derivatised on paper for ambient mass spectrometry

Date: Jan 15, 2015

Author: Steve Down

Reactive paper spray mass spectrometry has been used for the on-paper derivatisation of PAH quinones in cell culture medium, urine and serum and holds potential for rapid screening in a clinical setting.

Read More thumbnail image: Reactive paper spray PAH quinones derivatised on paper for ambient mass spectrometry

Journal Highlight: Analysis of vitamin D metabolic markers by mass spectrometry: Current techniques, limitations of the “gold standard” method, and anticipated future directions

Date: Jan 12, 2015

Author: spectroscopyNOW

This review examines mass spectrometry methodologies of the past 12 years for measuring vitamin D metabolites, highlighting detrimental influences of the biological matrix and the pitfalls of specific mass spectrometry data acquisition routines, especially MRM.

Read More thumbnail image: Journal Highlight Analysis of vitamin D metabolic markers by mass spectrometry Current techniques limitations of the gold standard method and anticipated future directions

Ischemic amino acids: Rapid mass spectrometric estimation in the brain

Date: Jan 8, 2015

Author: Steve Down

The levels of the neurotransmitters glutamic acid and aspartic acid have been measured in the brains of diabetic rats following reperfusion by a rapid LC/MS procedure.

Read More thumbnail image: Ischemic amino acids Rapid mass spectrometric estimation in the brain

Coated blade spray: Combining SPME with ambient mass spectrometry

Date: Dec 15, 2014

Author: Steve Down

A new coated blade device for the extraction of analytes from complex matrices and subsequent direct ambient ionisation for mass spectrometric analysis aims to provide accurate, fast and low-cost assays of biological fluids and tissue in the clinical setting.

Read More thumbnail image: Coated blade spray Combining SPME with ambient mass spectrometry

Journal Highlight: Matrix-assisted laser desorption/ionization mass spectrometry imaging: a powerful tool for probing the molecular topology of plant cutin polymer

Date: Dec 8, 2014

Author: spectroscopyNOW

The cutin polymers of different fruit cuticles (tomato, apple, nectarine) were examined using MALDI MSI after in situ release of the lipid monomers by alkaline hydrolysis, revealing a powerful tool for probing the surface heterogeneity of plant lipid polymers.

Read More thumbnail image: Journal Highlight Matrix-assisted laser desorptionionization mass spectrometry imaging a powerful tool for probing the molecular topology of plant cutin polymer

Screening for 200 illegal sports drugs: The power of high-resolution mass spectrometry

Date: Dec 3, 2014

Author: Steve Down

A single LC/MS method using high-resolution time-of-flight mass spectrometry has been developed to measure 200 illegal sports drugs in urine down to the WADA minimum required performance levels.

Read More thumbnail image: Screening for 200 illegal sports drugs The power of high-resolution mass spectrometry

Direct mass spectrometry of biofluids: Slug-flow microextraction for point-of-care applications

Date: Nov 21, 2014

Author: Steve Down

A novel combination of slug-flow microextraction and direct mass spectrometry has the potential to be translated into clinical and point-of-care applications which could replace traditional lab procedures for the analysis of biofluids.

Read More thumbnail image: Direct mass spectrometry of biofluids Slug-flow microextraction for point-of-care applications
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