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Journal Highlight: A protocol for pressurized liquid extraction and processing methods to isolate modern and ancient bone cholesterol for compound-specific stable isotope analysis

Date: Jan 23, 2017

Author: separationsNOW

Scientists in the US have designed a pressurized liquid extraction protocol for recovering cholesterol from modern and ancient bones, prior to analysis by gas chromatography and isotope ratio mass spectrometry.

Read More thumbnail image: Journal Highlight A protocol for pressurized liquid extraction and processing methods to isolate modern and ancient bone cholesterol for compound-specific stable isotope analysis

Medical diagnosis on paper: Conducting SPME with filter paper

Date: Jan 16, 2017

Author: Jon Evans

Chinese scientists have shown that simple filter paper can be used to extract a biomarker of oxidative stress from urine.

Read More thumbnail image: Medical diagnosis on paper Conducting SPME with filter paper

Journal Highlight: Miniaturized pipette-tip-based electrospun polyacrylonitrile nanofibers for the micro-SPE of nitro-based explosive compounds

Date: Jan 10, 2017

Author: separationsNOW

Chemists in South Africa have used electrospun polyacrylonitrile nanofibers as sorbents for the solid-phase extraction of nitroaromatic explosive compounds from water prior to analysis by HPLC.

Read More thumbnail image: Journal Highlight Miniaturized pipette-tip-based electrospun polyacrylonitrile nanofibers for the micro-SPE of nitro-based explosive compounds

Journal Highlight: Optimization of process parameters for supercritical fluid extraction of cholesterol from whole milk powder using ethanol as co-solvent

Date: Dec 26, 2016

Author: separationsNOW

Indian researchers have optimized the extraction of cholesterol from whole milk powder using supercritical carbon dioxide with ethanol as a co-solvent, prior to analysis by high-performance liquid chromatography.

Read More thumbnail image: Journal Highlight Optimization of process parameters for supercritical fluid extraction of cholesterol from whole milk powder using ethanol as co-solvent

Diamonds for Christmas: Novel method for extracting diamondoids from crude oil

Date: Dec 19, 2016

Author: Jon Evans

Chinese scientists have developed a fast, efficient and sustainable method for extracting nanoscale diamonds from crude oil, which could work with many other compounds as well.

Read More thumbnail image: Diamonds for Christmas Novel method for extracting diamondoids from crude oil

Journal Highlight: Determination of chloramphenicol in biological matrices by solid-phase membrane micro-tip extraction and CE

Date: Dec 12, 2016

Author: separationsNOW

Scientists from Saudia Arabia and India have used solid-phase membrane micro-tip extraction and capillary electrophoresis to detect the antibiotic chloramphenicol in human plasma and urine samples.

Read More thumbnail image: Journal Highlight Determination of chloramphenicol in biological matrices by solid-phase membrane micro-tip extraction and CE

Journal Highlight: Polytetrafluoroethylene-jacketed stirrer modified with graphene oxide and polydopamine for the efficient extraction of polycyclic aromatic hydrocarbons

Date: Nov 28, 2016

Author: separationsNOW

Chinese scientists have found a way to immobilize graphene onto a polytetrafluoroethylene stirrer, which proved to be highly effective at extracting polycyclic aromatic hydrocarbons from real dust samples.

Read More thumbnail image: Journal Highlight Polytetrafluoroethylene-jacketed stirrer modified with graphene oxide and polydopamine for the efficient extraction of polycyclic aromatic hydrocarbons

Looks like snow: Extracting proteins with dendrimers

Date: Nov 21, 2016

Author: Jon Evans

Scientists from Spain and the Czech Republic have shown that branched, snowflake-shaped molecules known as dendrimers can efficiently extract proteins from biological material.

Read More thumbnail image: Looks like snow Extracting proteins with dendrimers

Journal Highlight: Development and validation of a SPME-GC-MS method for in situ passive sampling of root volatiles from glasshouse-grown broccoli plants undergoing below-ground herbivory by larvae of cabbage root fly

Date: Nov 14, 2016

Author: separationsNOW

British scientists have developed a new solid phase microextraction (SPME) method for extracting volatile compounds from plant roots prior to analysis by gas chromatography-mass spectrometry.

Read More thumbnail image: Journal Highlight Development and validation of a SPME-GC-MS method for in situ passive sampling of root volatiles from glasshouse-grown broccoli plants undergoing below-ground herbivory by larvae of cabbage root fly

Journal Highlight: Enantioselective determination of cathinone derivatives in human hair by CE combined in-line with SPE

Date: Oct 24, 2016

Author: separationsNOW

Spanish chemists have developed a method for detecting enantiomers of the illict drug mephedrone in human hair based on the in-line coupling of solid-phase extraction and capillary electrophoresis.

Read More thumbnail image: Journal Highlight Enantioselective determination of cathinone derivatives in human hair by CE combined in-line with SPE
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