Search: GERSTEL MPS

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Using Three Types of Twister Phases for Stir Bar Sorptive Extraction of Whisky, Wine and Fruit Juice

This paper describes a novel ethylene glycol- (EG) and silicone based combined sorbent phase developed for stir bar sorptive extraction (SBSE) using the GERSTEL Twister. EG-Silicone, polyacrylate (PA), and p ...

Resource - Susan Gilbert - 20th Apr 2012 - 0 comments

Evaporative Concentration of Substances Listed in the European Water Framework Directive 1000/60/EC and 2008/105/EC. A Performance Comparison Between an Automated System and a Manual System

Having to reach ever lower limits of detection is a daily challenge in modern laboratories. In order to succeed in obtaining sufficiently sensitive analysis methods, sample preparation techniques such as Sol ...

Resource - Susan Gilbert - 20th Apr 2012 - 0 comments

Versatile Automated Pyrolysis GC Combining a Filament Type Pyrolyzer with a Thermal Desorption Unit

This paper describes an automated pyrolysis system for gas chromatography (GC) based on a filament type pyrolyzer combined with a commercially available thermal desorption instrument, onto which the pyrolysis ...

Resource - Susan Gilbert - 9th Dec 2011 - 0 comments

Determination of 2-Methylisoborneol, Geosmin and 2,4,6-Trichloroanisole in Drinking Water by Dynamic Headspace Coupled to Selectable 1D/2D GC-MS with Simultaneous Olfactory Detection

A method for the determination of trace amounts of off-flavour compounds such as 2-methyl isoborneol (MIB), geosmin and 2,4,6-trichloroanisole (TCA) in drinking water is described based on dynamic headspace c ...

Resource - Susan Gilbert - 17th Oct 2011 - 0 comments

Improving MS Detection of Aflatoxins using Automated Solid Phase Extraction and Derivatization Coupled with an LC/MS System

Aflatoxins are metabolites from molds such as Aspergillus Flavus and Aspergillus Parasiticus. Aflatoxins are classified as mycotoxins, they are among the most potent human carcinogens, found mainly in foods ...

Resource - Susan Gilbert - 14th Apr 2011 - 0 comments

Improving MS Detection of Malachite Green in Fish Products using Automated SPE Coupled with an LC/ION Trap MS System

Malachite Green (MG) is a triphenyl methane dye that is highly efficient in battling fungi, bacteria and various single cell parasites. MG is traditionally used in aquaculture to treat and prevent fungal inf ...

Resource - Susan Gilbert - 14th Apr 2011 - 0 comments

Safe and Efficient Detection of Chloramphenicol in Food using Automated SPE

Solid Phase Extraction (SPE) using standard cartridges is widely regarded as the method of choice to extract analytes from samples with complex matrices or to extract and concentrate analytes from a wide vari ...

Resource - Susan Gilbert - 14th Apr 2011 - 0 comments

Automated Sample Fractionation and Analysis Using a Modular LC-GC System

For the separation of complex mixtures or for the detection of trace analytes in complex matrices, a single (one-dimensional) chromatographic separation is often not adequate. The peak capacity (number of pea ...

Resource - Susan Gilbert - 7th Jan 2011 - 0 comments

Advances in the Capillary Gas Chromatographic Analysis of Beverages using PTV Injection combined with Ancillary Sample Introduction Systems

The sources of compounds that produce desired flavours and undesired off-flavours in alcoholic and non-alcoholic beverages are the raw materials used in their production and the production process itself. The ...

Resource - Susan Gilbert - 6th Jan 2011 - 0 comments

Direct Injection of Distilled Spirits with PTV Matrix Removal: The Perfect Splitless Injection?

Distilled spirits are complex mixtures of flavour compounds in an ethanol/water matrix [1]. These compounds originate from the raw materials, and the fermentation, distillation and ageing stages of the produc ...

Resource - Susan Gilbert - 6th Jan 2011 - 0 comments