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Granulated rubber in playgrounds and sports fields: A potential source of atmospheric plastic-related contaminants and plastic additives after runoff events
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Researchers examined whether the crumb rubber used in playgrounds and sports fields releases plastic-related contaminants and chemical additives into the air after weathering. They found that summer conditions caused the rubber surfaces to shed inhalable micro- and nanoparticles containing potentially harmful additives. The study raises concerns about chronic exposure risks for children and athletes who regularly use these surfaces.
The use of "crumb rubber" coming from recycling materials in outdoor floors like playgrounds has been a frequent practice during the last years. However, these surfaces are object of abrasion and weathering being a potential source of micro and nanoplastics (MNPLs) to the atmosphere and a potential source of human exposure to them. Our main goal has been to expose different crumb rubber materials to summer weathering effects. The released inhalable fractions were sampled for two months with passive samplers and the composition of MNPLs and plastic additives (organic and inorganic) were evaluated. The ecotoxicological effects of leached materials emulating runoff events was evaluated in freshwater micro crustacean Daphnia magna and the green algae Chlorella vulgaris. The analysis of MNPLs showed the presence of polyethylene, polypropylene, polybutadiene, polysiloxanes and polybutylene at concentrations up to 30,426 ng/m3. In the same fraction, we also identified up to 56 plastic additives, including antioxidants, pigments, copolymers, flame retardants, fungicides, lubricants, plasticizers, UV filters and metal ions. Finally, runoff ecotoxicological effects on D. magna and C. vulgaris showed that leached compounds, either from virgin or aged material, would be toxicants for exposed organisms although at concentrations much higher than those expected to be released to the media.
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Artificial sport surfaces and adverse effects for human health. A literature review
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This literature review evaluates health risks from artificial sport surfaces using recycled tire rubber infill, finding that the EU classifies rubber granules as microplastics and that their hazardous chemical content raises bio-accessibility concerns especially for children using playgrounds.
A new look at rubber recycling and recreational surfaces: The inorganic and OPE chemistry of vulcanised elastomers used in playgrounds and sports facilities
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Researchers analyzed the chemical composition of recycled rubber crumb used in playgrounds and sports fields, measuring trace elements and organophosphate esters. They found high zinc concentrations in used tire crumb and identified numerous flame retardant and plasticizer chemicals across all sample types. The study raises concerns about chemical exposure from recreational rubber surfaces and calls for closer investigation of how these compounds weather and leach over time.
Metal and metalloid content in real urban synthetic surfaces made of recycled tire crumb rubber including playgrounds and football fields
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Researchers analyzed metal and metalloid concentrations in crumb rubber infill material collected in-use from playgrounds and artificial sports fields across multiple sites, finding elevated levels of metals including toxic heavy metals in samples from children's play areas. Crumb rubber from recycled tires represents the largest intentional source of microplastics in the environment, and children who play on these surfaces face potential exposure to both the plastic particles and their toxic metal content. The study provides real-world contamination data from actual in-use facilities rather than laboratory samples, making the findings more directly applicable to public health decisions.
Emissions of >1 mm rubber granule infill from artificial turfs: a case study from two football pitches
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Those artificial turf soccer fields with rubber crumb infill are shedding tiny plastic rubber bits into the soil and, once it rains, that rubber can wash straight into local streams and lakes with little to stop it. Researchers found the amount escaping varied a lot between fields depending on how they're used and maintained, showing this is a real and manageable pollution source rather than a fixed problem. While this study focused on environmental spread rather than direct health effects, it's a reminder that the microplastics you might track home on your shoes after a game don't just disappear—they end up in waterways, adding to the broader mix of plastic pollution
Hazardous compounds in recreational and urban recycled surfaces made from crumb rubber. Compliance with current regulation and future perspectives
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Researchers characterized 42 hazardous chemicals including PAHs, phthalates, and antioxidants in 40 crumb rubber surfaces used in sports fields and playgrounds, finding that most samples meet recent EU limits for rubber granulates but exceed standards for consumer products, and that multiple endocrine-disrupting compounds were widely detected at parts-per-million concentrations.
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