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New psychoactive substance in blotter paper: Ambient mass spectrometry imaging

Date: Nov 15, 2017

Author: Steve Down

Mass spectrometry imaging using an ambient ionisation technique has been used to map a recently discovered phenylethylamine novel psychoactive substance (NPS) in blotter paper where GC/MS failed to detect it.

Read More thumbnail image: New psychoactive substance in blotter paper Ambient mass spectrometry imaging

CID detects triglyceride positional isomers

Date: Nov 15, 2017

Author: Ryan De Vooght-Johnson

The amount and types of triglycerides (fats and oils) in the diet are linked to a number of disease conditions, but current methods of determining the exact position of the fatty acids on the glycerol portion of these compounds are slow and cumbersome. Scientists from the University of Massachusetts Boston have devised a new method employing mass spectrometry to distinguish between the different positional isomers of triglycerides.

Read More thumbnail image: CID detects triglyceride positional isomers

Pick up a prion: Solid state NMR spots the differences

Date: Nov 15, 2017

Author: David Bradley

Researchers in the USA have used solid-state nuclear magnetic resonance (NMR) spectroscopy to study the rogue proteins involved in familial human cerebral amyloid angiopathy (CAA). This hereditary neurodegenerative condition is one of the family of prion diseases that afflict mammals and include bovine spongiform encephalopathy (often referred to colloquially as "mad cow disease"), Creutzfeldt-Jakob disease in humans, their equivalents in cats, mice, hamsters and other animals.

Read More thumbnail image: Pick up a prion Solid state NMR spots the differences

Hybrid perovskites: Terahertz communications boost

Date: Nov 15, 2017

Author: David Bradley

A hybrid inorganic-organic perovskite that has the same structure as the original mineral can be layered on to a silicon wafer to build a component of future terahertz communications devices according to research from the University of Utah.

Read More thumbnail image: Hybrid perovskites Terahertz communications boost

Silicon solution: AAS testing in multiple sclerosis

Date: Nov 15, 2017

Author: David Bradley

Transversely -heated graphite furnace atomic absorption spectrometry has been used to show that drinking silicon-rich mineral water can increase the rate of urinary excretion of toxic aluminium ions in people with secondary progressive multiple sclerosis (SPMS).

Read More thumbnail image: Silicon solution AAS testing in multiple sclerosis

What a pen and ink: X-rayed papyrus

Date: Nov 15, 2017

Author: David Bradley

X-ray microscopic analyses of 2,000-year-old papyri fragments by scientists at the University of Copenhagen, Denmark, has shown that the black ink used by Egyptian scribes was not comprised of purely carbon-based organic materials as previously thought but contains the metallic element copper not previously identified in such inks.

Read More thumbnail image: What a pen and ink X-rayed papyrus

Journal Highlight: Comparative chemometric analysis for classification of acids and bases via a colorimetric sensor array

Date: Nov 13, 2017

Author: spectroscopyNOW

An 8 sensor colorimetric array was used to analyze acid and basic samples to determine whether PCA, HCA, or LDA is the best chemometric method for classification quantification of analytes within clusters.

Read More thumbnail image: Journal Highlight Comparative chemometric analysis for classification of acids and bases via a colorimetric sensor array

Journal Highlight: Chemiluminescence detection of trace iodide with flow injection analysis of KMnO4-carbon dots system

Date: Nov 6, 2017

Author: spectroscopyNOW

Ultra-weak chemiluminescence from the reaction of iodide and KMnO4 was strongly enhanced by carbon nanodots in an acidic medium, allowing the evaluation of iodide in foodstuffs such as seaweed.

Read More thumbnail image: Journal Highlight Chemiluminescence detection of trace iodide with flow injection analysis of KMnO4-carbon dots system

Journal Highlight: Qualitative and quantitative characterization of protein biotherapeutics with liquid chromatography mass spectrometry

Date: Nov 6, 2017

Author: spectroscopyNOW

The technical challenges and strategies of LC/MS-based quantification and characterization of biotherapeutics have been reviewed, with emphasis on the analysis of antibody-based biotherapeutics such as monoclonal antibodies and antibody-drug conjugates.

Read More thumbnail image: Journal Highlight Qualitative and quantitative characterization of protein biotherapeutics with liquid chromatography mass spectrometry

Journal Highlight: In vivo X-ray imaging of transport of renal clearable gold nanoparticles in the kidneys

Date: Nov 6, 2017

Author: spectroscopyNOW

Noninvasive X-ray imaging of renal clearable gold nanoparticles in normal and nephropathic kidneys has advanced understanding of the nano-bio interactions while offering a new pathway to noninvasively image kidney dysfunction and local injuries at the anatomical level.

Read More thumbnail image: Journal Highlight Invivo X-ray imaging of transport of renal clearable gold nanoparticles in the kidneys
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