Analysis of particles originating from the use of matches revealed that only a very small number of spherical particles were present; the majority of particles was very irregular. The elements detected were aluminum, calcium, chlorine, chromium, iron, potassium, magnesium, manganese, phosphorus, sulfur, antimony, silicon, and zinc, with potassium, chlorine, phosphorus, sulfur, and silicon the major components. Antimony was detected in only 2 of the 17 types of matches examined. None of the samples examined would be confused with FDR particles as both their morphology and elemental content differed.

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