Combustion elemental analysis

Rach Václav - Metalco Testing s.r.o. (Czech Republic)

Nowadays, increasing demands are placed on determining the content of elements in various samples. Accurate and reliable elemental analysis is important for determining the properties of the analysed material, for analysing the quality of the environment and especially for determining the composition of the analysed object.
One of the methods of elemental analysis is the combustion elemental analysis by which it is possible to determine very accurately the concentration of elements especially in solid materials. Hydrogen, carbon, nitrogen, oxygen and sulphur can be determined by this method. Compared to other analytical methods, the advantages of the combustion elemental analysis are especially fast, robust and simple analysis and low detection limits.
The analysis starts by weighting and introducing the sample to the furnace, where it is combusted and converted into a gas. The gaseous sample passes through dust and interferent filters to detector (infrared or thermal conductivity). A signal of the gaseous sample is registered, then calculated by a computer and finally converted to the amount of the analysed element in the sample.
Combustion elemental analysers can be used in engineering, metallurgy, production of electric energy, analysis of minerals, agriculture, environment, medicine or science and research.

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