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Journal Highlight: Elucidation of insulin assembly at acidic and neutral pH: Characterization of low molecular weight oligomers

Date: Nov 27, 2017

Author: separationsNOW

Scientists in the US have used gel electrophoresis to characterize the size distribution of insulin oligomers at different assembly stages.

Read More thumbnail image: Journal Highlight Elucidation of insulin assembly at acidic and neutral pH Characterization of low molecular weight oligomers

Journal Highlight: Directly-coupled-column ultra-fast liquid chromatography with diode array detection method for the rapid quantification of allergenic disperse dyes in water preconcentrated by magnetic solid-phase extraction

Date: Nov 20, 2017

Author: separationsNOW

Directly-coupled-column ultra-fast liquid chromatography coupled with diode array detection for the determination of 12 allergenic disperse dyes in river water at sub-ppb levels has been developed and successfully validated.

Read More thumbnail image: Journal Highlight Directly-coupled-column ultra-fast liquid chromatography with diode array detection method for the rapid quantification of allergenic disperse dyes in water preconcentrated by magnetic solid-phase extraction

Caught by a thread: Conducting electrophoresis on individual textile threads

Date: Nov 20, 2017

Author: Jon Evans

Imagine conducting analytical chemistry with your clothing. That’s the possibility raised by Australian chemists who have managed to perform electrophoresis on individual textile threads.

Read More thumbnail image: Caught by a thread Conducting electrophoresis on individual textile threads

Propelling pencils into analysis: Amperometric detection with pencil leads

Date: Nov 20, 2017

Author: Jon Evans

A normal graphite pencil lead from a propelling pencil, costing just a few cents, makes a highly sensitive electrode for amperometric detection, say Brazilian researchers.

Read More thumbnail image: Propelling pencils into analysis Amperometric detection with pencil leads

Phospholipid problem solving: Extracting phospholipids with a modified silica gel

Date: Nov 20, 2017

Author: Jon Evans

Polish scientists have developed a novel solid-phase extraction technique based on a modified silica gel for removing interfering phospholipids from blood.

Read More thumbnail image: Phospholipid problem solving Extracting phospholipids with a modified silica gel

Coffee break: Protein alterations after drinking

Date: Nov 15, 2017

Author: Steve Down

A proteomics study of coffee drinkers in Sweden has uncovered inverse associations with two proteins that have been linked to appetite suppression and a number of diseases, including respiratory disorders, Alzheimer's disease and cancer.

Read More thumbnail image: Coffee break Protein alterations after drinking

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

Shining a light on ionic liquid photodegradation

Date: Nov 15, 2017

Author: Ryan De Vooght-Johnson

Ionic liquids have long been touted as 'green' solvents, but relatively little work has been carried out on their degradation in the environment. Researchers from the University of Turin, Italy, examined the degradation products formed by UV irradiation of aqueous solutions of the ionic liquid 1-butyl-1-methylpiperidinium tetrafluoroborate (BMPA) using HPLC and an LTQ-Orbitrap mass spectrometer.

Read More thumbnail image: Shining a light on ionic liquid photodegradation

Metabolites from NVP sorted out by correct GC

Date: Nov 15, 2017

Author: Ryan De Vooght-Johnson

1-Vinyl-2-pyrrolidone, or NVP, and its polymers are used for a wide variety of applications, but there are some concerns about the compound’s long-term toxicity. Scientists from RWTH Aachen University used GC-MS/MS to determine the levels of metabolites of 1-vinyl-2-pyrrolidone, using spiked human urine and urine from rats exposed to the compound.

Read More thumbnail image: Metabolites from NVP sorted out by correct GC

Gout can make you spit: Analyzing gout-related metabolites in saliva

Date: Nov 13, 2017

Author: Jon Evans

Scientists in the US have used capillary ion chromatography and mass spectrometry to identify metabolites in saliva associated with the painful inflammatory condition known as gout.

Read More thumbnail image: Gout can make you spit Analyzing gout-related metabolites in saliva
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