Analysis by Curie-point-pyrolysis Coupled with Gas Chromatography Ms
Apr 18 2008
All parameters such as temperature, pyrolysis time and of course GC conditions, can be defined for each sample, if required.
The Curie-Point-Pyrolyser can be installed or removed fromthe GC in just a fewminutes. In this way you can easily change - reliably and safely - between pyrolysis and liquid injection.
Despite the power of modern analytical instruments techniques of analysis such as gas chromatography and mass spectrometry one of the most important challenges remains that of sample preparation - especially far non-volatile, insoluble materials and chemicals.
Sample preparation can require a lot of time and expertise particularly when dealing with small sample amounts.
Pyrolysis is a well-established method for the analysis of complex non-volatile, chemical materials and provides a time saving alternative. With pyrolysis techniques it is not necessary to performsample preparation. In addition small amounts of sample (micrograms) may be sufficient for an analysis.
The advantage of Curie-Point-Pyrolysis is the use of ferromagnetic material which heats up in a very short time inside a magnetic field to a defined Curie-Point temperature. With increasing temperature the permeability of ferromagnetic materials decreases. At the Curie-Point the relative permeability of the sample carrier falls suddenly and the status changes instantaneously from ferromagnetic to paramagnetic.
Pyrolysis temperature may be controlled by selection of the composition of the sample carrier, e.g. pure iron has a Curie-Point temperature of 770 degrees Celsius and nickel 358 degrees Celsius. Through the selection of different alloy compositions Curie-Point temperatures can be provided from 160 to 1040 degrees Celsius in ca. 15 degree steps.
Following pyrolysis the fragments are transferred by the carrier gas into the gas chromatograph for separation and detection. Applications for Pyroylsis include: Polymers, co-polymers, elastomers, synthetics, rubber, Lacquers, paints, resin, wax, pigments, biological-/geological materials and microbiological assays.
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