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Chemometrics captures cosmetic contamination compounds

Date: Aug 15, 2018

Author: Ryan De Vooght-Johnson

Glucocorticoid steroids are sometimes illegally added to face masks, but the unambiguous detection and quantification of such compounds can be difficult since they often have similar structures. Researchers from Hunan University, Changsha, China, used LC-MS in combination with an alternating trilinear decomposition (ATLD) algorithm to separate closely related glucocorticoids.

Read More thumbnail image: Chemometrics captures cosmetic contamination compounds

Problem solving: Separating and identifying human serum albumin isoforms

Date: Aug 13, 2018

Author: Jon Evans

As a highly abundant protein in the blood, human serum albumin (HSA) is often a problem, but a new method for separating and identifying different HSA isoforms could also turn it into a solution.

Read More thumbnail image: Problem solving Separating and identifying human serum albumin isoforms

Journal Highlight: Development of a fast gas chromatography tandem mass spectrometry method for volatile aromatic compound analysis in oenological products

Date: Aug 13, 2018

Author: separationsNOW

An innovative GC‐MS/MS method useful for fast analysis of the broad aroma profile of oenological products has been developed, using a set of fifty volatile compounds belonging to the main chemical classes.

Read More thumbnail image: Journal Highlight Development of a fast gas chromatography tandem mass spectrometry method for volatile aromatic compound analysis in oenological products

Journal Highlight: Proteins in xylem exudates from rapeseed plants (Brassica napus L.) play a crucial role in cadmium phytoremediation

Date: Aug 13, 2018

Author: separationsNOW

Two scientists from Taiwan have used two‐dimensional gel electrophoresis to investigate the proteins that play a role in cadmium transport in rapeseed plants.

Read More thumbnail image: Journal Highlight Proteins in xylem exudates from rapeseed plants Brassica napus L_ play a crucial role in cadmium phytoremediation

Journal Highlight: Contactless conductivity detection for analytical techniques: Developments from 2016 to 2018

Date: Aug 13, 2018

Author: separationsNOW

According to this review of recent developments in contactless conductivity detection, relatively few reports on fundamental investigations or new designs have appeared over the past two years, but the development of new applications has continued strongly.

Read More thumbnail image: Journal Highlight Contactless conductivity detection for analytical techniques Developments from 2016 to 2018

Journal Highlight: Different miniaturized extraction methodologies followed by GC–MS/MS analysis for the determination of UV filters in beach sand

Date: Aug 13, 2018

Author: separationsNOW

Scientists in Spain tested four different methods for extracting UV filters from beach sand, including ultrasound and vortex extractions, prior to analysis by gas chromatography-tandem mass spectrometry.

Read More thumbnail image: Journal Highlight Different miniaturized extraction methodologies followed by GCMSMS analysis for the determination of UV filters in beach sand

GC spectra clarified when MCR technique applied

Date: Aug 13, 2018

Author: Ryan De Vooght-Johnson

The felty germander, Teucrium polium, is used as a herbal medicine, but contains a complex mixture of compounds that is difficult to analyse. Scientists from the University of Kerman and the Kerman branch of the Islamic Azad University (Iran) used GC-MS and chemometric methods (MCR-ALS and PARAFAC) to examine the components of this plant’s essential oil.

Read More thumbnail image: GC spectra clarified when MCR technique applied

Prediction of GC RT shows impressive accuracy

Date: Aug 10, 2018

Author: Ryan De Vooght-Johnson

The accurate prediction of GC retention times from thermodynamic properties is useful in order to save time and money, but still remains a challenge. Scientists from the University of Alberta, Edmonton, Canada, developed a mathematical model for retention times, successfully applying it to five different compounds.

Read More thumbnail image: Prediction of GC RT shows impressive accuracy

Journal Highlight: Revealing the potential of capillary electrophoresis – mass spectrometry: the tipping point

Date: Aug 9, 2018

Author: separationsNOW

This perspective by French researchers reviews the major types of high sensitivity capillary electrophoresis-mass spectrometry instrumentation and details its use for characterizing biological molecules like peptides and proteins.

Read More thumbnail image: Journal Highlight Revealing the potential of capillary electrophoresis  mass spectrometry the tipping point

Journal Highlight: Determination of trehalose by ion chromatography and its application on a pharmacokinetic study in rats after intramuscular injection

Date: Aug 9, 2018

Author: separationsNOW

Chinese scientists have developed an ion chromatography method for detecting trehalose in blood plasma after intramuscular injection.

Read More thumbnail image: Journal Highlight Determination of trehalose by ion chromatography and its application on a pharmacokinetic study in rats after intramuscular injection
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