Sample preparation for the analysis of matured timber

The matured timber statute dedicates itself with the utilization and application of matured timber: the use of the material, applications in energy and the disposal of. It especially includes rules concerning analysis for the examination of matured timber in regards to heavy metals (lead, cadmium, chromium etc.), arsenic, as well as PCP and PCB (pentachlorophenol and polychlorinated biphenyl).
For the sample preparation (after a suitable sampling) a composite sample of 500 g is needed. This is divided into two sub-specimens. After drying, the sample is reduced with the FRITSCH Universal Cutting Mill  PULVERISETTE 19 or with the FRITSCH Universal Cutting Mill  PULVERISETTE 19l/50-700 rpm, down to < 2 mm.

The obtained homogenous sample is treated with aqua regia and then with ICP-OES or AAS analyzed.