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A spirited defence: Extracting PAHs from liqour

Date: Jul 7, 2015

Author: Steve Down

Polyaromatic hydrocarbons in alcoholic spirits have been extracted by an efficient, rapid and green ultrasound-assisted emulsification microextraction system, the absence of matrix effects in subsequent GC/MS analysis eliminating the need for standard additions during quantification.

Read More thumbnail image: A spirited defence Extracting PAHs from liqour

No fears for tears: One-pot protein extraction

Date: Jun 22, 2015

Author: Steve Down

Scientists in Norway have devised an efficient way to extract proteins from Schirmer tear fluid test strips that is carried out in one vessel and reduces losses, allowing more than 1500 proteins to be detected by LC/MS.

Read More thumbnail image: No fears for tears One-pot protein extraction

Journal Highlight: A sample preparation method for recovering suppressed analyte ions in MALDI TOF MS

Date: Jun 15, 2015

Author: separationsNOW

A modified thin-layer sample preparation method is described that significantly reduces the analyte suppression effect in MALDI TOF MS.

Read More thumbnail image: Journal Highlight A sample preparation method for recovering suppressed analyte ions in MALDI TOF MS

Ionic liquid SPME: Polycarbazole support for aromatic esters

Date: Jun 8, 2015

Author: Steve Down

A novel SPME fibre comprising an ionic liquid immobilised in the pores of a polycarbazole film has been prepared for the extraction of aromatic esters from aqueous liquids such as lake water and grape juice.

Read More thumbnail image: Ionic liquid SPME Polycarbazole support for aromatic esters

3D for top-down proteomics: Extra dimension for more proteins

Date: May 25, 2015

Author: Steve Down

An expanded protocol for separating proteins in biological mixtures uses three successive chromatographic methods which operate under different criteria, vastly improving the number of proteins resolved to allow deeper proteome profiling.

Read More thumbnail image: 3D for top-down proteomics Extra dimension for more proteins

Journal Highlight: Applications of magnetic surface imprinted materials for solid phase extraction of levofloxacin in serum samples

Date: May 18, 2015

Author: separationsNOW

Molecularly imprinted magnetic carbon nanotubes were prepared with a surface imprinting technique for the extraction of levofloxacin from serum samples.

Read More thumbnail image: Journal Highlight Applications of magnetic surface imprinted materials for solid phase extraction of levofloxacin in serum samples

PALME for acidic drugs: Liquid membrane system

Date: May 11, 2015

Author: Steve Down

Scientists who developed a sample preparation regime called parallel artificial liquid membrane extraction have applied it to the removal of acidic drugs from human plasma.

Read More thumbnail image: PALME for acidic drugs Liquid membrane system

Proteins in urine: Capillary channels in polymer fibres for micro-SPE

Date: Apr 20, 2015

Author: Steve Down

Polymer fibres with inbuilt channels have been used for the extraction of proteins from urine by solid-phase extraction in a rapid and inexpensive preparation for mass spectrometric analysis.

Read More thumbnail image: Proteins in urine Capillary channels in polymer fibres for micro-SPE

Journal Highlight: Cryogenic separation of an oxygen–argon mixture in natural air samples for the determination of isotope and molecular ratios

Date: Apr 13, 2015

Author: separationsNOW

The precise cryogenic separation of oxygen–argon mixtures from natural air samples has been accomplished using a single 5Å (30/60 mesh) molecular sieve column at liquid nitrogen temperature, which is associated with isotopic fractionation.

Read More thumbnail image: Journal Highlight Cryogenic separation of an oxygenargon mixture in natural air samples for the determination of isotope and molecular ratios

Finding phytohormones: Plant purification and pre-treatment regime

Date: Apr 8, 2015

Author: Steve Down

A novel strategy for purifying phytohormones in plant extracts that was devised by Chinese scientists relies on a combination of mixed-mode cation-exchange SPE and liquid-liquid extraction.

Read More thumbnail image: Finding phytohormones Plant purification and pre-treatment regime
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