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Cannabis compounds in cords captured by UHPLC

Date: Jun 18, 2018

Author: Ryan De Vooght-Johnson

The use of cannabis during pregnancy can lead to adverse effects on babies so objective methods are needed to determine whether cannabis has been taken. Scientists from the City University of New York and the University of Santiago de Compostela, Spain, devised a new UHPLC-MS/MS method for detecting the main active ingredient of cannabis (THC) and its metabolites in umbilical cords.

Read More thumbnail image: Cannabis compounds in cords captured by UHPLC

Journal Highlight: Evaluation of coal‐related model compounds using a tandem mass spectrometry

Date: Jun 18, 2018

Author: separationsNOW

A tandem mass spectrometric technique using GC/Q‐TOFMS has been established for the selection of precursor ion/product ion pairs for monitoring coal conversion products.

Read More thumbnail image: Journal Highlight Evaluation of coalrelated model compounds using a tandem mass spectrometry

Breast milk biomarkers: Determining differently-expressed proteins in breast milk

Date: Jun 18, 2018

Author: Jon Evans

Scientists in the US used two-dimensional gel electrophoresis to try to find biomarkers of breast cancer in the breast milk of a woman who had developed cancer in just one breast.

Read More thumbnail image: Breast milk biomarkers Determining differently-expressed proteins in breast milk

Carbon detector sets new standard: Novel universal detector for organic compounds

Date: Jun 18, 2018

Author: Jon Evans

A new universal detector for use with liquid chromatography can determine the concentration of any organic compound using a single, readily-available chemical standard.

Read More thumbnail image: Carbon detector sets new standard Novel universal detector for organic compounds

Come together: The benefits of combining two extraction methods

Date: Jun 18, 2018

Author: Jon Evans

Iranian scientists have combined electromembrane extraction with electro-assisted liquid-liquid microextraction and shown that together they can effectively extract two antidepressants from wastewater and urine.

Read More thumbnail image: Come together The benefits of combining two extraction methods

Headspace GC and TCD give water absorption capacity

Date: Jun 15, 2018

Author: Ryan De Vooght-Johnson

The water absorption capacity of flour is an important characteristic that is normally measured by filtration techniques, which can be awkward to use. Scientists from the South China University of Technology (Guangzhou, China) and the Health Supervision Bureau of Liaoning Province (Shenyang, China) developed a novel method of determining the water absorption capacity of wheat flour using headspace GC technology and a thermal conductivity detector (TCD).

Read More thumbnail image: Headspace GC and TCD give water absorption capacity

Asthma control: Protein biomarkers

Date: Jun 15, 2018

Author: Steve Down

A proteomics study has identified a link between the levels of proteins in the serum and sputum of asthmatics for whom the disease is poorly controlled, providing early indications when further clinical intervention is needed to give a better outcome.

Read More thumbnail image: Asthma control Protein biomarkers

Picogram performance possible with plasma ionisation

Date: Jun 15, 2018

Author: Ryan De Vooght-Johnson

Semifluorinated alkanes are used in eye treatments and also as a component of ski wax, the latter use giving rise to concern about possible pollution. Researchers from the University of Münster and the Leibniz Institute for Analytical Sciences, Dortmund (both in Germany) used GC-MS with dielectric barrier discharge ionisation (DBDI), an atmospheric pressure plasma method, to detect a range of semifluorinated alkanes at low levels.

Read More thumbnail image: Picogram performance possible with plasma ionisation

Journal Highlight: Updating chromatographic predictions by accounting ageing for single and tandem columns

Date: Jun 11, 2018

Author: separationsNOW

Models for predicting chromatographic behaviour on single and coupled columns which have aged have been adapted to correct the time and peak profiles.

Read More thumbnail image: Journal Highlight Updating chromatographic predictions by accounting ageing for single and tandem columns

IEC makes light work: Of characterizing proteins

Date: Jun 11, 2018

Author: Jon Evans

For characterizing certain proteins, scientists in Israel have shown that multi-angle light scattering is better combined with ion-exchange chromatography rather than the more conventional size-exclusion chromatography.

Read More thumbnail image: IEC makes light work Of characterizing proteins
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