Search: Agilent 6890N GC, GERSTEL

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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

Out-Gassing of Hard Disk Covers

Modern hard disks are more sensitive to chemical contaminations. Due to the higher drive operation speed, sealing materials and plastics gas out more than before. Out gassing of organic contaminations is a p ...

Resource - Susan Gilbert - 13th Sep 2011 - 0 comments

A Novel Extraction Procedure for Stir Bar Sorptive Extraction (SBSE): Sequential SBSE for Uniform Enrichment of Organic Pollutants in Water Samples

A novel stir bar sorptive extraction (SBSE) procedure termed sequential SBSE was developed. Compared to conventional SBSE, sequential SBSE provides more uniform enrichment over the entire polarity/volatility ...

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

Fast Screening of Pesticide Multiresidues in Aqueous Samples by Dual Stir Bar Sorptive Extraction (Dual SBSE) and Thermal Desorption – Fast GC/MS using a Modular Accelerated Column Heater (MACH)

A method for fast screening of pesticide multiresidues in aqueous samples using dual stir bar sorptive extraction (dual SBSE) – thermal desorption (TD) – fast GC/MS has been developed. Recovery of 82 pesticid ...

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

Multi-Residue Method for the Determination of Five Groups of Pesticides in Non-Fatty Food Samples by Dual Stir Bar Sorptive Extraction (Dual SBSE) and Thermal Desorption GC-MS

A multi-residue method for determination of five groups of 85 pesticides – organ chlorine, carbonate, organ phosphorous, parathyroid and others – in non-fatty food, e.g. vegetables, fruits and green tea is de ...

Resource - Susan Gilbert - 13th Apr 2011 - 0 comments

Stir Bar Sorptive Extraction-Thermal Desorption-Capillary GC-MS applied for Analysis of Amphetamine Derivatives in Biological Fluids

Stir bar sorptive extraction (SBSE) is a novel sample preparation technique for the enrichment of solutes from biological matrices. The principle and operation of SBSE for enrichment of pharmaceutical drugs a ...

Resource - Susan Gilbert - 13th Apr 2011 - 0 comments

Multi-Residue Method for Determination of 85 Pesticides in Vegetables, Fruits and Green Tea by Stir Bar Sorptive Extraction and Thermal Desorption GC-MS

A multi-residue method to determine five groups of 85 pesticides – chlorinated, carbamate, phosphorous, pyrethroid and others – in vegetables, fruits and green tea has been developed using stir bar sorptive e ...

Resource - Susan Gilbert - 13th Apr 2011 - 0 comments

Comparison of Headspace Sampling and Stir Bar Sorptive Extraction in the Detection of Whiskey Adulteration with a Mass-Spectrometry Based Chemical Sensor

Verification of authenticity is a crucial aspect of food quality control. In particular, alcoholic beverages have been targets of numerous adulteration schemes. Addition of caramel colouring, water and lesser ...

Resource - Susan Gilbert - 25th Jan 2011 - 0 comments

Membrane Extraction of Flavors from water

Flavor components used in beverages are spiked to HPLC-grade water and extracted with ethanol and tert.-butylmethylether by means of GERSTEL Membrane Extraction. The extraction is carried out manually whereas ...

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

Automated Extraction, Derivatization and GC/MS Determination of Tetrahydrocannabinol and Metabolites in Whole Blood Using Disposable Pipette Extraction

Disposable pipette extraction (DPX) has been shown to be a rapid, efficient and reproducible technique for performing solid-phase extraction (SPE) of drugs from biological specimens. DPX is based on pipette ...

Resource - Susan Gilbert - 9th Sep 2010 - 0 comments