TY - GEN A1 - Iznaguen, Hassan T1 - Homogeneity of dispersed brominated flame retardants (HBCD) in polystyrene by LA-ICP-MS and XRF N2 - To investigate the release or migration of flame retardants from polypropylene (PP) and polysytrene (PS) samples with a defined content of flame retardants as additives were prepared and used. Therefore a distinct 1,2,5,6,9,10-hexabromocyclododecane HBCD concentration of 1 wt.% in PS resp. a specified bromodiphenylether (BDE-209) of 0.1 wt.% in PP is defined. For the preparation of the samples granular PP or PS are extruded together with the BFR additives. Even the result of this process may lead to homogenous partitions of the BFR additives. So, the distribution of these additives must be proven before using the samples in an experimental setup for weathering studies. In accordance to the regulation of RoHS (2011/65/EU) , where the use of XRF is recommended for the proof of flame retardants in electronic consumer products, we use this method as a reference to the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Therefore we present the correlation of these experiments. The experimental setup for the XRF experiment is like a standard addition: in cavities, which are introduced in the sample plates subsequently, solutions of defined concentration of flame retardants are put in there. According to the idea of standard addition, we get an information of the originating mass fraction of flame retardant in each sample and we can monitor the release and migration of these additives during/after the weathering experiments with high precision. An internal standard of HBCD is added as a marker and can be analyzed after the weathering experiment. T2 - 8th European Weathering Symposium EWS CY - Wien, Austria DA - 20.09.2017 KW - LA-ICP-MS KW - XRF KW - BFR PY - 2017 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/43313 AN - OPUS4-43313 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany