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Journal Highlight: Chromatographic methods in HIV medicine: Application to therapeutic drug monitoring

Date: Jan 22, 2018

Author: separationsNOW

This review summarises the analytical methods relevant to therapeutic monitoring of HIV drugs, including HPLC-UV and LC-MS/MS, while highlighting respective challenges.

Read More thumbnail image: Journal Highlight Chromatographic methods in HIV medicine Application to therapeutic drug monitoring

Journal Highlight: Simultaneous determination of furfural and its degradation products, furoic acid and maleic acid, in transformer oil by the reversed-phase vortex-assisted LLME followed by HPLC

Date: Jan 22, 2018

Author: separationsNOW

Chinese chemists combined reversed-phase vortex-assisted liquid–liquid microextraction with high-performance liquid chromatography to produce a method for determining furfural, furoic acid and maleic acid in transformer oil.

Read More thumbnail image: Journal Highlight Simultaneous determination of furfural and its degradation products furoic acid and maleic acid in transformer oil by the reversed-phase vortex-assisted LLME followed by HPLC

Journal Highlight: Quantification of the pyrrolizidine alkaloid jacobine in Crassocephalum crepidioides by cation exchange high-performance liquid chromatography

Date: Jan 22, 2018

Author: separationsNOW

Scientists from Germany and Nigeria have tested the suitability of cation exchange chromatography for separating pyrrolizidine alkaloids from other plant metabolites extracted from a herb called Crassocephalum crepidioides.

Read More thumbnail image: Journal Highlight Quantification of the pyrrolizidine alkaloid jacobine in Crassocephalum crepidioides by cation exchange high-performance liquid chromatography

Journal Highlight: Preterm infants with necrotising enterocolitis demonstrate an unbalanced gut microbiota

Date: Jan 22, 2018

Author: separationsNOW

Scientists from France, Lebanon and UAE used temperature temporal gel electrophoresisto to help investigate differences in the gut microbiota of preterm infants in Lebanon with and without necrotising enterocolitis.

Read More thumbnail image: Journal Highlight Preterm infants with necrotising enterocolitis demonstrate an unbalanced gut microbiota

Liquid–liquid microextraction leads to GC satisfaction

Date: Jan 16, 2018

Author: Ryan De Vooght-Johnson

Phthalate esters are widespread environmental contaminants and there is concern about their possible health effects so accurate methods to measure their plasma concentrations are needed. Scientists from Iran have used dispersive liquid–liquid microextraction (DLLME) and GC-MS to measure the levels of four common phthalates.

Read More thumbnail image: Liquidliquid microextraction leads to GC satisfaction

Network premiere for fumarase-insufficient cells

Date: Jan 16, 2018

Author: Ryan De Vooght-Johnson

Fumarase is an important enzyme, and work with rats suggested that low levels may affect amino acid levels and possibly be associated with hypertension. Scientists in China have examined the metabolites of human cells that had been genetically altered to be deficient in fumarase, comparing them to the metabolites from control cells using GC-MS and chemometric methods, such as pathway analysis.

Read More thumbnail image: Network premiere for fumarase-insufficient cells

Micrograms enough for LC on dyestuffs

Date: Jan 16, 2018

Author: Ryan De Vooght-Johnson

Various plants containing coloured alkaloids have been used as dyestuffs in the past, so there is a demand for analytical methods that can deal with small sample sizes, thus allowing the investigation of historical textiles. Scientists from Warsaw University of Technology have developed a new capillary HPLC method for these alkaloids, investigating its use with silk and wool.

Read More thumbnail image: Micrograms enough for LC on dyestuffs

Turbulence under the sun: Determining exposure to sunscreen ingredients

Date: Jan 15, 2018

Author: Jon Evans

By combining a sample preparation method called turbulence flow chromatography with LC-MS, German scientists have been able to detect three metabolites of a sunscreen ingredient in urine.

Read More thumbnail image: Turbulence under the sun Determining exposure to sunscreen ingredients

Impure state: Separating iron oxidation states in lithium-ion batteries

Date: Jan 15, 2018

Author: Jon Evans

A novel capillary electrophoresis method for determining whether a commonly-used material for battery cathodes contains any iron at the wrong oxidation state could help lithium-ion batteries retain their charge for longer.

Read More thumbnail image: Impure state Separating iron oxidation states in lithium-ion batteries

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
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