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Under pressure: Creating a pressure-driven flow with electroosmotic flow

Date: Nov 12, 2018

Author: Jon Evans

Scientists in the US have developed a way to generate a pressure-driven flow directly on an ion chromatography microchip by taking advantage of electroosmotic flow.

Read More thumbnail image: Under pressure Creating a pressure-driven flow with electroosmotic flow

Journal Highlight: Contribution of hydroxymethane sulfonate to ambient particulate matter: A potential explanation for high particulate sulfur during severe winter haze in Beijing

Date: Nov 5, 2018

Author: separationsNOW

Researchers from the US and China have shown that ion chromatography methods for measuring ambient particulates in the atmosphere can easily misinterpret hydroxymethane sulfonate as sulfate.

Read More thumbnail image: Journal Highlight Contribution of hydroxymethane sulfonate to ambient particulate matter A potential explanation for high particulate sulfur during severe winter haze in Beijing

Journal Highlight: Staphylococcus aureus lipase: purification, kinetic characterization, crystallization and crystallographic study

Date: Oct 22, 2018

Author: separationsNOW

Japanese scientists used immobilized metal‐affinity chromatography, cation‐exchange chromatography and anion‐exchange chromatography to isolate and purify a lipase from the bacterium Staphylococcus aureus, a common cause of food poisoning.

Read More thumbnail image: Journal Highlight Staphylococcus aureus lipase purification kinetic characterization crystallization and crystallographic study

Acid taste of honey: A novel ion chromatography method for analyzing organic acids in honey

Date: Oct 8, 2018

Author: Jon Evans

Chemists from Singapore and Saudi Arabia have developed a simple, potentially portable ion chromatography method for extracting and analyzing the organic acids in raw, undiluted honey.

Read More thumbnail image: Acid taste of honey A novel ion chromatography method for analyzing organic acids in honey

Journal Highlight: Determination of nitenpyram and 6‐chloronicotinic acid in environmental samples by ion chromatography coupled with online photochemically induced fluorescence detector

Date: Oct 4, 2018

Author: separationsNOW

Scientists from China and Pakistan have developed an ion chromatography method for determining the insecticide nitenpyram and its metabolite 6‐chloronicotinic acid in environmental samples.

Read More thumbnail image: Journal Highlight Determination of nitenpyram and 6chloronicotinic acid in environmental samples by ion chromatography coupled with online photochemically induced fluorescence detector

Journal Highlight: Extremely stable high molecular mass soluble multiprotein complex from eggs of sea urchin Strongylocentrotus intermedius with phosphatase activity

Date: Sep 24, 2018

Author: separationsNOW

Russian scientists used various analytical techniques, including ion-exchange chromatography and thin layer chromatography, to analyze a very stable multiprotein complex extracted from sea urchin eggs.

Read More thumbnail image: Journal Highlight Extremely stable high molecular mass soluble multiprotein complex from eggs of sea urchin Strongylocentrotus intermedius with phosphatase activity

Fishing for allergens: With ion-exchange chromatography and capillary electrophoresis

Date: Sep 10, 2018

Author: Jon Evans

Chinese scientists have combined ion-exchange chromatography with capillary electrophoresis to produce a quick and simple method for detecting the main allergen in fish.

Read More thumbnail image: Fishing for allergens With ion-exchange chromatography and capillary electrophoresis

Journal Highlight: Monolithic column functionalized with quinine derivative for anion‐exchange capillary electrochromatography

Date: Sep 5, 2018

Author: separationsNOW

Chinese scientists have developed a novel anion‐exchange organic polymer monolithic column based on the monomers N‐benzylquininium chloride and acrylamide for performing capillary electrochromatography.

Read More thumbnail image: Journal Highlight Monolithic column functionalized with quinine derivative for anionexchange capillary electrochromatography

Journal Highlight: Use of an amino acid ionic liquid as an ion exchange chromatography mobile phase modifier for the analysis of magnesium, calcium, zinc, and iron ions

Date: Aug 27, 2018

Author: separationsNOW

Chinese scientists tested the effect of adding an amino acid ionic liquid to a nitric acid-based mobile phase on the retention time, peak height and resolution of metal cations separated by ion-exchange chromatography.

Read More thumbnail image: Journal Highlight Use of an amino acid ionic liquid as an ion exchange chromatography mobile phase modifier for the analysis of magnesium calcium zinc and iron ions

Problem solving: Separating and identifying human serum albumin isoforms

Date: Aug 13, 2018

Author: Jon Evans

As a highly abundant protein in the blood, human serum albumin (HSA) is often a problem, but a new method for separating and identifying different HSA isoforms could also turn it into a solution.

Read More thumbnail image: Problem solving Separating and identifying human serum albumin isoforms
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