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Crystals reveal the answer: Detecting drugs with a quartz crystal microbalance

Date: Mar 16, 2015

Author: Jon Evans

A novel type of high temperature quartz crystal disc could make the perfect detector for small, portable gas chromatography systems, say US researchers.

Read More thumbnail image: Crystals reveal the answer Detecting drugs with a quartz crystal microbalance

Journal Highlight: Cutting-edge mass spectrometry characterization of originator, biosimilar and biobetter antibodies

Date: Mar 9, 2015

Author: separationsNOW

This special features describes some of the cutting-edge mass spectrometry techniques available for analyzing antibody biosimilars, as well as some of the separation methods that can be combined with them.

Read More thumbnail image: Journal Highlight Cutting-edge mass spectrometry characterization of originator biosimilar and biobetter antibodies

Journal Highlight: Fiber optic illumination of a poly(dimethylsiloxane) sheath flow cuvette for diode LIF detection in CE

Date: Mar 2, 2015

Author: separationsNOW

A Canadian chemist has designd a tee-configuration sheath flow cuvette with square cross-section channels for conducting laser-induced fluorescence detection with a diode and optical fiber after capillary electrophoresis.

Read More thumbnail image: Journal Highlight Fiber optic illumination of a polydimethylsiloxane sheath flow cuvette for diode LIF detection in CE

No impedance or suppression: Conductivity detection with nanoporous platinum electrodes

Date: Feb 16, 2015

Author: Jon Evans

Utilizing electrodes made from a nanoporous platinum material, Korean scientists have managed to perform conductivity detection following ion chromatography without the use of an ion suppressor.

Read More thumbnail image: No impedance or suppression Conductivity detection with nanoporous platinum electrodes

Journal Highlight: Reversed-phase liquid chromatography with electrospray mass detection and 1H and 13C NMR characterization of new process-related impurities, including forced degradants of Efavirenz

Date: Feb 9, 2015

Author: separationsNOW

By combining liquid chromatography with accurate mass measurement and NMR spectroscopy, Indian scientists have developed a method for determining process-related impurities and forced degradants in the anti-HIV drug Efavirenz.

Read More thumbnail image: Journal Highlight Reversed-phase liquid chromatography with electrospray mass detection and 1H and 13C NMR characterization of new process-related impurities including forced degradants of Efavirenz

Journal Highlight: Multidimensional carbon allotropes as electrochemical detectors in capillary and microchip electrophoresis

Date: Feb 2, 2015

Author: separationsNOW

This review discusses the ways in which the main carbon allotropes – carbon nanotubes, graphene, diamond and graphite – have been employed as electrochemical detectors for capillary and microchip electrophoresis.

Read More thumbnail image: Journal Highlight Multidimensional carbon allotropes as electrochemical detectors in capillary and microchip electrophoresis

Therapeutic condensation: Detecting sialic acid with nano quantity analyte detection

Date: Jan 19, 2015

Author: Jon Evans

Researchers at the biopharmaceutical company Amgen have shown how a little-known condensation-based detection technique can be used to analyse sialic acid in therapeutic proteins.

Read More thumbnail image: Therapeutic condensation Detecting sialic acid with nano quantity analyte detection

Journal Highlight: A serial dual-electrode detector based on electrogenerated bromine for CE

Date: Jan 12, 2015

Author: separationsNOW

Chinese researchers have designed and fabricated a new serial dual-electrode detector for capillary electrophoresis that detects analytes based on their reaction with electrogenerated bromine.

Read More thumbnail image: Journal Highlight A serial dual-electrode detector based on electrogenerated bromine for CE

Journal Highlight: Characterization of interactions between methoxatin disodium salt and human serum albumin by pressure-assisted CE/frontal analysis and circular dichroism spectroscopy

Date: Jan 5, 2015

Author: separationsNOW

Using circular dichroism spectroscopy to monitor confirmation changes in human serum albumin (HSA), Chinese researchers developed a CE method for investigating interactions between HSA and methoxatin disodium salt.

Read More thumbnail image: Journal Highlight Characterization of interactions between methoxatin disodium salt and human serum albumin by pressure-assisted CEfrontal analysis and circular dichroism spectroscopy

Stretching sounds: Probing individual molecules with acoustic force spectroscopy

Date: Dec 15, 2014

Author: Jon Evans

If you want a simple, cheap form of force spectroscopy that can study lots of individual molecules in parallel and fit onto a lab-on-a-chip device, acoustic force spectroscopy sounds like the technique for you.

Read More thumbnail image: Stretching sounds Probing individual molecules with acoustic force spectroscopy
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