Search: Agilent 5890

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The AQUATek 70 Liquid Autosampler Precision and Cleanliness Capabilities

Precision of both sample transfer and standard addition are critical for any autosampler. Furthermore, autosamplers must conserve standard reagents and demonstrate minimal carryover. The Tekmar AQUATek 70™ ...

Resource - Susan Gilbert - 19th Dec 2011 - 0 comments

Determining Diesel and Oil Range Organics in Water Using Automated Solid Phase Extraction

Although not frequently a problem, recent incidents at sea have led to large amounts of crude oil being released and dispersed throughout the Gulf of Mexico. Originally presumed to be Louisiana Sweet Crude, ...

Resource - Susan Gilbert - 11th Jul 2011 - 0 comments

Multi-Residue Analysis of Pesticides in Samples of Lettuce and Peas Using Large Volume-Difficult Matrix Introduction-Gas Chromatography-Mass Spectrometry (LV-DMI-GC-MS)

Ethyl acetate is widely used as a solvent for the multi-residue extraction of pesticides from foods because it provides acceptable recovery over a wide range of polarity. Prior to GC analysis of the extracts ...

Resource - Susan Gilbert - 18th Apr 2011 - 0 comments

The Focus Robotic Sample Processor as a Tool for the Multiple Analysis of Samples using Complementary Techniques

The Focus is a multifunctional instrument and can be used for the automated preparation and injection of samples using many techniques, for example SPME, headspace, liquid-liquid extraction, thermal desorptio ...

Resource - Susan Gilbert - 18th Apr 2011 - 0 comments

The Measurement of Free and Total Peppermint Oil in a Yeast-based Micro-encapsulation System

Fluid Technologies' Micap™ is a yeast-based micro-encapsulation system for volatile food flavours and other components including pesticides and pharmaceuticals. The yeast used for encapsulation is grown conti ...

Resource - Susan Gilbert - 18th Apr 2011 - 0 comments

Comparison of Standard Liquid Extraction and Direct Thermal Desorption GC/MS Techniques for the Analysis of Charcoal Filters used for Indoor Air Purification in a PCB Contaminated Building

Many buildings constructed from prefabricated elements are widely contaminated with PCB originated in e.g. elastic sealants, which act as permanent sources for several years. Indoor air filtration is part of ...

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

Trace Analysis of PAH´s and PCB´s in Soil through On-Line Direct Thermal Desorption

Thermodesorption is a well-known technique for the analysis of volatile organic contaminants in air and normally employs adsorption on porous polymers. This operation principle can also be adapted for the dir ...

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

Direct Thermal Analysis of Solids – A Fast Method for the Determination of Halogenated Phenols and Anisoles in Cork

Off-flavours in solid samples often cause analytical problems due to the necessity of sample pre-treatment steps such as time consuming extractions followed by reconcentration of the resulting extracts and th ...

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

Design, Performance and Applicability of a Multi-Functional Thermodesorption System for Trace Analysis in Capillary GC

Thermodesorption is a well-known technique for the analysis of volatile organic contaminants in air normally adsorbed on porous polymers and has been previously discussed [1]. This operation principle can als ...

Resource - Susan Gilbert - 14th Apr 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