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Time to spray: A novel ESI method for detecting analytes in picoliter samples

Date: Nov 16, 2015

Author: Jon Evans

A novel electrospray ionization (ESI) technique that sprays in carefully-timed pulses allows analytes in picoliter samples to be detected by mass spectrometry at concentrations 1000 times lower than possible with nano-ESI.

Read More thumbnail image: Time to spray A novel ESI method for detecting analytes in picoliter samples

Journal Highlight: Enhancement of mass spectrometry performance for proteomic analyses using high-field asymmetric waveform ion mobility spectrometry

Date: Nov 9, 2015

Author: separationsNOW

This article looks at the benefits of combining liquid chromatography-mass spectrometry with high-field asymmetric waveform ion mobility spectrometry for proteomics analyses.

Read More thumbnail image: Journal Highlight Enhancement of mass spectrometry performance for proteomic analyses using high-field asymmetric waveform ion mobility spectrometry

Journal Highlight: Dual-signal amplification strategy for ultrasensitive chemiluminescence detection of PDGF–BB in CE

Date: Nov 3, 2015

Author: separationsNOW

Chinese researchers have designed a dual-signal amplification strategy for conducting highly specific and ultrasensitive chemiluminescence detection with capillary electrophoresis.

Read More thumbnail image: Journal Highlight Dual-signal amplification strategy for ultrasensitive chemiluminescence detection of PDGFBB in CE

Deep sea detector: A single detector for monitoring gases from hydrothermal vents

Date: Oct 19, 2015

Author: Jon Evans

By precisely timing the opening and closing of a valve, Chinese and US chemists have been able to monitor hydrogen and methane released from hydrothermal vents on the ocean floor using gas chromatography with a single detector.

Read More thumbnail image: Deep sea detector A single detector for monitoring gases from hydrothermal vents

Journal Highlight: Characterization of poly (N-vinyl formamide) by SEC–multiangle light scattering and AF4–multiangle light scattering

Date: Oct 12, 2015

Author: separationsNOW

Spanish researchers have used size exclusion chromatography and asymmetric-flow field-flow fractionation with multiangle light scattering and a refractive index detector to characterize three related polymers.

Read More thumbnail image: Journal Highlight Characterization of poly N-vinyl formamide by SECmultiangle light scattering and AF4multiangle light scattering

Journal Highlight: Identification of degradation products of indigoids by tandem mass spectrometry

Date: Oct 5, 2015

Author: separationsNOW

Polish chemists have used liquid chromatography with both tandem mass spectrometry and spectrophotometry to analyze the degradation of indigo dyes on exposure to sunlight.

Read More thumbnail image: Journal Highlight Identification of degradation products of indigoids by tandem mass spectrometry

Doing the channel zigzag: Conducting LIF detection in multiple channels on a single chip

Date: Sep 21, 2015

Author: Jon Evans

By repeatedly deflecting a laser beam up and down, Japanese scientists have come up with an elegant way to conduct laser-induced fluorescence detection in multiple channels on a single microfluidic chip.

Read More thumbnail image: Doing the channel zigzag Conducting LIF detection in multiple channels on a single chip

Journal Highlight: Chemical composition analysis and authentication of whisky

Date: Sep 14, 2015

Author: separationsNOW

This article reviews the various techniques used for analyzing whisky, such as gas and liquid chromatography with different types of detector, including UV detector, flame ionization detector and mass spectrometer.

Read More thumbnail image: Journal Highlight Chemical composition analysis and authentication of whisky

Journal Highlight: Parallel dual secondary-column-dual detection comprehensive 2D-GC: a flexible and reliable analytical tool for essential oils quantitative profiling

Date: Sep 7, 2015

Author: separationsNOW

Scientists from the US and Italy have combined 2D gas chromatography with two different detectors to conduct the quantitative profiling of essential oils.

Read More thumbnail image: Journal Highlight Parallel dual secondary-column-dual detection comprehensive 2D-GC a flexible and reliable analytical tool for essential oils quantitative profiling

No crying over fouled electrodes: Analyzing tears with indirect amperometric detection

Date: Aug 17, 2015

Author: Jon Evans

A new, improved version of a rarely-used form of amperometric detection can detect the amino acid taurine in tears without causing a build-up of gunk.

Read More thumbnail image: No crying over fouled electrodes Analyzing tears with indirect amperometric detection
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