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Discover leading research in cannabis detection

Date: Oct 3, 2017

Author:

Cannabinoid research from an analytical viewpoint is rapidly developing as a more liberal approach to the medical, legal and social issues of the drug is adopted. Start reading our cannabinoid collection of papers here - free to access until the end of December.

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Informatics securely separates snow lotus species

Date: Oct 1, 2017

Author: Ryan De Vooght-Johnson

The snow lotus is a plant used in traditional Chinese medicine, but there has long been confusion between the three different Saussurea species called by this name. Researchers from Hong Kong Baptist University, the Chinese University of Hong Kong and the Sichuan Academy of Chinese Medical Sciences used UHPLC-MS together with principal component analysis (PCA) and hierarchical cluster analysis (HCA) to distinguish between the three species on the basis of their typical chemical composition.

Read More thumbnail image: Informatics securely separates snow lotus species

Journal Highlight: Quantitative analysis of total hydrocarbons and water in oil-contaminated soils with attenuated total reflection infrared spectroscopy

Date: Sep 18, 2017

Author: spectroscopyNOW

The feasibility of direct quantitative analysis of total hydrocarbons and water in oil-contaminated soils using ATR-mid-IR spectroscopy has been evaluated, the spectral data being used to build calibration models for hydrocarbon contamination and moisture content.

Read More thumbnail image: Journal Highlight Quantitative analysis of total hydrocarbons and water in oil-contaminated soils with attenuated total reflection infrared spectroscopy

Mixed-mode model made for medicinal antibodies

Date: Sep 16, 2017

Author: Ryan De Vooght-Johnson

Mixed-mode chromatography (MMC), which combines the properties of ion-exchange chromatography (IEC) and hydrophobic interaction chromatography (HIC), is increasingly used for the purification of various proteins, such as medicinal antibodies. Scientists from Mannheim University of Applied Sciences and Roche Pharmaceuticals’ Munich site developed equations to predict the elution of a bispecific antibody from an MMC column.

Read More thumbnail image: Mixed-mode model made for medicinal antibodies

MS muddle made manageable by mulitplierz software

Date: Sep 6, 2017

Author: Ryan De Vooght-Johnson

The diversity of current mass spectrometry methods and software tools has led to multiple arrays of data that are not readily comparable. Researchers from Harvard Medical School and the Dana-Farber Cancer Institute in Boston have reported on the latest version of their multiplierz software, which aims to provide a common platform for mass spectrometry proteomic data.

Read More thumbnail image: MS muddle made manageable by mulitplierz software

No standards involved, but are all problems solved?

Date: Aug 15, 2017

Author: Ryan De Vooght-Johnson

Modern analytical techniques, such as HRMS (high-resolution mass spectrometry), enable the simultaneous detection of a large number of compounds, but normally rely on analytical standards of all the compounds being available, which may not be the case. Researchers from the Zurich Official Food Control Authority have developed an LC-HRMS method that identifies compounds without the use of standards, demonstrating its efficiency by identifying veterinary compounds spiked into meat and fish extracts.

Read More thumbnail image: No standards involved but are all problems solved

Plasma toughens nanotubes: Computer simulation

Date: Aug 15, 2017

Author: David Bradley

A computer simulation by US scientists reveals how a high-energy plasma can be used to toughen up carbon nanotubes.

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Journal Highlight: Elimination of matrix interferences in GC-MS analysis of pesticides by entropy minimization

Date: Aug 14, 2017

Author: spectroscopyNOW

An entropy minimization technique that can eliminate the need for comprehensive preprocessing steps has been developed to detect organophosphorus pesticides in a fortified orange juice sample by GC/MS.

Read More thumbnail image: Journal Highlight Elimination of matrix interferences in GC-MS analysis of pesticides by entropy minimization

Hydrophilic interactions change along with volume fractions

Date: Aug 1, 2017

Author: Ryan De Vooght-Johnson

Hydrophilic interaction liquid chromatography (HILIC) is a relatively new method, so theoretical work on the relationships between its parameters is not as extensive as with older techniques. Scientists from the University of Belgrade looked at the association between peak retention and mobile phase composition for HILIC on the antipsychotic drug olanzapine and its impurities using various theoretical models.

Read More thumbnail image: Hydrophilic interactions change along with volume fractions

Journal Highlight: Determination of cannabinoids in hemp nut products in Taiwan by HPLC-MS/MS coupled with chemometric analysis: quality evaluation and a pilot human study

Date: Jul 17, 2017

Author: spectroscopyNOW

The Δ9-tetrahydrocannabinol, cannabidiol and cannabinol contents of concentrated hemp powdered nut products were determined by LC/MS using hierarchical clustering analysis and principal component analysis.

Read More thumbnail image: Journal Highlight Determination of cannabinoids in hemp nut products in Taiwan by HPLC-MSMS coupled with chemometric analysis quality evaluation and a pilot human study
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