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Spokes beat spirals: A novel flow cell design for chemiluminescence

Date: Jan 15, 2018

Author: Jon Evans

A new flow cell design for chemiluminescent detection is not only quicker and easier to produce via 3D printing than conventional designs, but also more sensitive.

Read More thumbnail image: Spokes beat spirals A novel flow cell design for chemiluminescence

Journal Highlight: Mass spectrometry in untargeted LC/MS metabolomics: Electrospray ionisation parameters and global coverage of the metabolome

Date: Jan 8, 2018

Author: separationsNOW

Biochemists from South Africa have investigated the electronic factors, including capillary and sample cone voltages, relating to the functioning of the electrospray ionization source in metabolomics studies with liquid chromatography/mass spectrometry.

Read More thumbnail image: Journal Highlight Mass spectrometry in untargeted LCMS metabolomics Electrospray ionisation parameters and global coverage of the metabolome

Journal Highlight: Routine quantification of 54 allergens in fragrances using comprehensive GCxGC-QMS with dual parallel secondary columns

Date: Jan 5, 2018

Author: separationsNOW

Scientists in Switzerland and Italy have combined two-dimensional gas chromatography with both a quadrupole mass spectrometer and a flame ionization detector to produce a novel method for analyzing allergens in fragrances.

Read More thumbnail image: Journal Highlight Routine quantification of 54 allergens in fragrances using comprehensive GCxGC-QMS with dual parallel secondary columns

Colorful detection: Coupling colorimetry with capillary electrophoresis

Date: Dec 18, 2017

Author: Jon Evans

By slotting three capillaries inside each other, Chinese scientists have found a way to combine capillary electrophoresis with gold nanoparticle-based colorimetry.

Read More thumbnail image: Colorful detection Coupling colorimetry with capillary electrophoresis

Journal Highlight: Derivatization agents for electrochemical detection in amino acid, peptide and protein separations: The hidden electrochemistry?

Date: Dec 11, 2017

Author: separationsNOW

This review covers electrochemical derivatization reagents and electrochemical tags employed for amino acids, peptides and proteins in separation techniques.

Read More thumbnail image: Journal Highlight Derivatization agents for electrochemical detection in amino acid peptide and protein separations The hidden electrochemistry

Journal Highlight: Comparison of linear intrascan and interscan dynamic ranges of Orbitrap and ion-mobility time-of-flight mass spectrometers

Date: Dec 5, 2017

Author: separationsNOW

Swiss food scientists have investigated the linear intrascan and interscan dynamic ranges of high-resolution mass spectrometers when analyzing metabolites in complex samples.

Read More thumbnail image: Journal Highlight Comparison of linear intrascan and interscan dynamic ranges of Orbitrap and ion-mobility time-of-flight mass spectrometers

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

Journal Highlight: Isolation of three triterpene saponins, including two new oleanane derivatives, from Soldanella alpina and HILIC–ELSD of these three saponins in four Soldenella species

Date: Nov 13, 2017

Author: separationsNOW

Scientists from Austria and Switzerland used hydrophilic interaction liquid chromatography with several detection techniques, including mass spectrometry, NMR and evaporative light scattering detection, to analyze saponins in the alpine snowbell.

Read More thumbnail image: Journal Highlight Isolation of three triterpene saponins including two new oleanane derivatives from Soldanella alpina and HILICELSD of these three saponins in four Soldenella species

Journal Highlight: Single-molecule mass spectrometry

Date: Nov 6, 2017

Author: separationsNOW

This review explores the merits, limitations and applications of several single-molecule mass spectrometry techniques, including quadrupole ion trap with optical detection, Fourier transform ion cyclotron resonance and nanomechanical oscillators.

Read More thumbnail image: Journal Highlight Single-molecule mass spectrometry

A gap opens up: Analyzing protein binding with CE and surface plasmon resonance

Date: Oct 16, 2017

Author: Jon Evans

To analyze protein binding with capillary electrophoresis and surface plasmon resonance, Dutch scientists found they needed to scratch a gap into a gold sensor.

Read More thumbnail image: A gap opens up Analyzing protein binding with CE and surface plasmon resonance
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