In recent years water-soluble polymers are gaining more and more interest in different applications. The molecular weight distribution of polymers is usually characterized by size exclusion chromatography (SEC) coupled with refractive index, viscometric or laser light scattering detection. Recent advances in SEC comprise semi-micro SEC and the design of linear columns providing wide molecular weight separation ranges and near-linear calibrations. We describe the separation of water-soluble polymers with a new generation of linear, polymer-based, semi-micro SEC columns using the compact EcoSEC SEC system.

The Application Notebook

Extend UHPLC Column Lifetime with KrudKatcher Ultra In-line Filters

October 02, 2010

General

Phenomenex Application Note

The Application Notebook

Making Non-Electrochemically Active Compounds Electrochemically Active

October 02, 2010

Pharmaceutical/Drug Discovery

Dionex Application Note

The Application Notebook

Polyolefins Microstructure Characterization by Automated Cross-Fractionation Chromatography (CFC)

October 02, 2010

General

Polymer Char Application Note

The Application Notebook

Increasing Proteome Coverage with ETD and CID in One Run Using Intelligent Data-Dependent Decision Tree Logic

October 02, 2010

Medical/Biological

Thermo Fisher Scientific Application Note

The Application Notebook

Determining the Health Impact of Burning Mosquito Coils Using Versatile Micro-chamber Sampling and TD-GC-MS

October 02, 2010

Environmental

Burning mosquito coils is common in many countries, however, the emission of various, potentially toxic volatile organic compounds (VOCs) is cause for concern. Novel sampling equipment with TD-GC-MS is used to extract, concentrate and analyse the emissions of two burning coils and determine any potential impact on consumer health.

The Application Notebook

LC-30 A Nexera — UHPLC in practical use

October 02, 2010

General

Shimadzu Application Note

The Application Notebook

Separation of Steviol Glycosides

October 02, 2010

Food and Beverage

A robust, selective and sensitive separation method for the determination of four steviol glycosides in stevia plant matrix is demonstrated. In addition to the two calibrated substances two more glycosides could be found in stevia plant extracts by LC–MS. Using a popular Eurospher NH2 phase and applying moderate separation conditions results in an inexpensive and precise analysis method.

The Application Notebook