HPLC @ separationsNOW

The HPLC channel covers all techniques used for the separation of liquids.

This includes multidimensional techniques (e.g. LCxLC) and hyphenated techniques (e.g. LC-MS). Also included are capillary LC, nano LC, SEC (Size Exclusion Chromatography) and GPC (Gel Permeation Chromatography).

Gas Chromatography

Monthly Highlight

Last Month's Most Accessed Feature: Design and degradation in drug determination

There is a need for new analytical methods for the anticancer drug sorafenib, which are suitable both for the compound itself and its degradation products. Researchers from Panjab University in India used an analytical quality by design approach (AQbD), including a face-centred cubic experimental design, to devise a new HPLC method for sorafenib and its degradation products.

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2018 Free Sample Issues of Key Analytical Science Journals

The 2018 free sample issues of all our Analytical Chemistry journals are now available!

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Advertorial Feature

Shimadzu Europa
Automatic Pre-Column Derivatization of Amino Acids by LC

thumbnail image: <font size=3>Shimadzu Europa</font><br />Automatic Pre-Column Derivatization of Amino Acids by LC

Amino acids as building blocks of peptides and proteins are present in animals, humans and plants. The analysis of amino acids is of essential significance in several areas including food science, clinical diagnostic and pharmaceutical products research. The classical LC determination of amino acids is performed by the sample pretreatment including pre-column as well as post-column derivatization increasing or even enabling spectroscopic detection.

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Ezines

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Quick quantification of cactus contamination

Ryan De Vooght-Johnson

Sep 12, 2019

thumbnail image: Quick quantification of cactus contamination

Researchers from Guangxi University (Nanning, China) and the Seed Administration Station of Bijie (China) developed a new method for quantifying Indaziflam residues in pitaya (dragon fruit), a type of cactus, showing its effectiveness with spiked plant samples.

Supercritical fluid chromatography (SFC) is increasingly used in research, particularly for chiral separations, but has tended to be considered a technique for analytical specialists rather than for the average chemist. Researchers from Novartis Institutes of Biomedical Research (Cambridge, Massachusetts) developed an easy-to-use ‘open access’ SFC method for chiral separations, demonstrating its usefulness on a range of enantiomeric compounds.

The presence of twelve dyes has been investigated in 130 meat product and fresh meat preparation samples by HPLC-UV-DAD and dietary exposure has been estimated.

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Education

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The Basics of Micro-LC

Thorsten Teutenberg, Terence Hetzel, Denise Loeker, Juri Leonhardt

Apr 3, 2018

thumbnail image: The Basics of Micro-LC

For some time “sustainable processes” has been the phrase on everyone’s lips. As far as analytical labs are concerned there are many possibilities for saving energy or rather for using resources more efficiently. Besides the real “energy guzzlers” such as extractors and safety cabinets, complex analysis apparatus has to be subjected to critical system checks, too.

Selected key technologies of the analytical science industry are discussed by Steve Down with reference to burgeoning application areas and the scope for future improvements.

Ion source pressure plays a significant role in the process of ionization and the subsequent ion transmission inside a mass spectrometer. Pressurizing the ion source to a gas pressure greater than atmospheric pressure is a relatively new approach that aims to further improve the performance of atmospheric pressure ionization sources. A brief review on the development of super-atmospheric pressure ion sources, including high-pressure electrospray, field desorption and superheated ESI, and the strategies to...

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Journals

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The Journal of Mass Spectrometry (JMS) publishes papers on a broad range of topics of interest to scientists working in both fundamental and applied areas involving the study of gaseous ions.

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