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Inorganic fluorescent marker materials for identification of post-consumer plastic packaging
A B S T R A C T Current plastic packaging waste management practices in Europe, but also in other countries require improvement due to legal and societal requirements. To meet high recycling rates, significant changes among others in post-consumer packaging waste sorting become necessary. This waste stream is dominated by plastic packaging. Inorganic fluorescent tracer materials (oxide crystals doped with ytterbium Yb 3+ sensitizer ions and either erbium (Er 3+ ), holmium (Ho 3+ ) or thuliumdoi:10.5445/ir/1000122806 fatcat:ghcjz35htnfpdpu4zsfsscoghm