Consumer Fireworks — Perchlorate, Heavy Metals, and PM2.5 from Recreational Pyrotechnics — outdoor safety profile
Moderate riskConsumer fireworks release a concentrated burst of heavy metals, perchlorate, and fine particulate matter (PM2.5) into the air, creating acute exposure events that are detectable in ambient air quality monitoring for hours to days after major celebrations.
What is this product?
Consumer fireworks release a concentrated burst of heavy metals, perchlorate, and fine particulate matter (PM2.5) into the air, creating acute exposure events that are detectable in ambient air quality monitoring for hours to days after major celebrations. The colorants in fireworks are metal salts — strontium (red), barium (green), copper (blue), sodium (yellow), and aluminum/magnesium (white) — many of which are toxic when inhaled as metal oxide aerosols. Barium compounds (barium chlorate, barium nitrate) are particularly concerning: barium is a cardiovascular toxicant causing hypokalemia and cardiac arrhythmia. Cadmium, a known human carcinogen (IARC Group 1), is present as a trace contaminant in firework pigments at concentrations that produce detectable airborne cadmium spikes on major firework holidays. PM2.5 levels measured on July 4th in US cities increase by 42% on average compared to adjacent days (Seidel & Birnbaum, 2015, Atmospheric Environment), with some monitoring stations recording 5-10x increases in hourly PM2.5 during peak display hours. Perchlorate — the oxidizer that drives firework combustion — contaminates surface water and groundwater near display sites at concentrations exceeding EPA health advisory levels (15 ug/L), persisting for weeks to months after events.
What's in it
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Contaminant
Colorant Oxidizer
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