ICP-MS Trace-Elemental Profiles of Flash Powders from Eight Independent Police Confiscations, Including Fraction Comparisons and Hierarchical Variability

This dataset contains ICP-MS trace-elemental concentration data for 43 commercial firework articles from eight independent police confiscations in the Netherlands. It includes raw and processed data for the sieved (<710 µm) flash powder fraction, fraction-comparison datasets for cellulose-rich and other retained coarse material, and hierarchical variability analyses spanning instrumental, digestion, article and confiscation levels. The dataset supports evaluation of trace-elemental profiling for forensic flash-powder comparison and includes 55 quantified elements across 129 independent digestions.