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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

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

Journal Highlight: Screening of semifluorinated n‐alkanes by GC coupled to dielectric barrier discharge ionization MS

Date: Jun 11, 2018

Author: separationsNOW

After coupling gas chromatography and mass spectrometry via dielectric barrier discharge, German scientists tried using this novel system to analyze semifluorinated n‐alkanes in samples of ski wax.

Read More thumbnail image: Journal Highlight Screening of semifluorinated nalkanes by GC coupled to dielectric barrier discharge ionization MS

Journal Highlight: Identification of an anti‐inflammation protein, annexin A1, in tendon derived stem cells of cystic fibrosis mice

Date: Jun 11, 2018

Author: separationsNOW

Chinese researchers used two‐dimensional gel electrophoresis and mass spectrometry to identify proteins involved in abnormal inflammation during tendon injury in mice with cystic fibrosis.

Read More thumbnail image: Journal Highlight Identification of an antiinflammation protein annexin A1 in tendon derived stem cells of cystic fibrosis mice

Journal Highlight: Electrospun polyacrylonitrile‐zeolite imidazolate framework‐8 nanofibers for the thin‐film microextraction of bisphenol A

Date: Jun 11, 2018

Author: separationsNOW

Iranian chemists have developed a novel nanofiber film for the thin‐film microextraction of bisphenol A from samples such as wastewater and plastic baby bottles, prior to analysis by high‐performance liquid chromatography.

Read More thumbnail image: Journal Highlight Electrospun polyacrylonitrilezeolite imidazolate framework8 nanofibers for the thinfilm microextraction of bisphenol A

Journal Highlight: An integrated course based on two dimensional‐electrophoresis and mass spectrometry analysis to teach proteomic techniques for undergraduate students

Date: Jun 4, 2018

Author: separationsNOW

An integrated course based on 2D gel electrophoresis and mass spectrometry provides undergraduates with an opportunity to systematically understand the proteomic techniques and their applications in current scientific research.

Read More thumbnail image: Journal Highlight An integrated course based on two dimensionalelectrophoresis and mass spectrometry analysis to teach proteomic techniques for undergraduate students
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