Search: GERSTEL ChemSensor 4440

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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

Comparison of Different Chemsensor Configurations

Three different headspace Chemsensor configurations were compared with each other. This was done using two solutions that were analyzed using only the headspace sampling technique. To compare the results of ...

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

Design and Characterization of a New Interface for a Mass Spectrometer Based Chemical Sensor

A new revised interface for the direct coupling of sample introduction systems to a Mass Selective Detector (MSD) has been designed. The new setup provides less potential air leaking problems by reducing the ...

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

Discrimination of Soft Drinks using a Chemical Sensor and Principal Component Analysis

A new technique that uses a chemical sensor coupled with multivariate analysis is evaluated and applied to discriminate soft drinks from different vendors. The headspace volatiles of different cola samples w ...

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

Characterization of a Mass Spectrometer based Electronic Nose for Routine Quality Control Measurements of Flavors

The Gerstel Chemsensor 4440A consists of a headspace autosampler that is directly coupled to a quadruple mass spectrometer. The analysis timer per sample is only 3 to 4 min. For multivariate data analysis th ...

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

Classification of Food and Flavor Samples using a Chemical Sensor

A mass spectrometry based chemical sensor consisting of a headspace autosampler directly coupled to a quadruple mass spectrometer was used in three different food and flavour applications; strawberry flavours ...

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

Comparison of Different Approaches to Rapid Screening of Headspace Samples: Pros and Cons of Using MS-Based Electronic Noses versus Fast Chromatography

In recent years there has been a growing demand on fast screening systems for classification of samples using their volatile composition. Typically, these samples can be analysed by either static headspace or ...

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

Detection of Spoilage Markers in Food Products using a Mass-Spectrometry Based Chemical Sensor

It is known that specific compounds are produced when foods spoil. For example, commonly recognised spoilage markers include dimethyl sulphide for chicken and eggs, diacetyl for orange juice, and trimethylam ...

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