System configurations for determination of hazardous substances
In order to enforce the substances ban and the limitation or substitution
of hazardous substances such as mercury, cadmium and lead, elemental analysis is
obviously the most important control measure for monitoring limiting values. This
requires precise analytical systems such as X-ray fluorescence, ICP and atomic absorption
spectrometers. These instruments are able to detect trace concentrations of hazardous
substances – for example cadmium, using an atomic absorption spectrometer in the
flame atomisation mode up to 0.1 mg/L, or using the digital graphite furnace for
electrothermal atomisation even up to 0.1 m g/L.
For the determination of hexavalent chromium, UV-VIS spectrometry is
the method of choice and can be carried out quickly and easily using a routine spectrophotometer
such as UVmini-1240. Polybrominated biphenyls as well as polybrominated diphenyl
ethers are analysed using FTIR spectrometers such as the IRPrestige-21 or in the
lower concentration range with GCMS systems (QP2010).