New research by Polish scientists suggests that recycled material used in playgrounds or running tracks can quietly release toxic chemicals into the environment. They say these substances can persist in soil and water for years, threatening ecosystems and human health. , experts emphasized that the use of such materials should be strictly regulated.
- Granulated rubber on playgrounds can release toxic chemicals into the environment.
- The smallest particles contain the most harmful substances called polycyclic aromatic hydrocarbons (PAHs).
In their study, Polish scientists focused on rubber granulate, small black grains made by crushing old tires. This material is often presented as an ecological solution that prevents millions of used tires from ending up in landfills.
Many people also praise it for its crash-absorbing properties much better than hard asphalt. That is why this durable material has become a popular choice for playground surfaces, filling of artificial lawns and the creation of soft anti-slip paths. while promoting it as a way to protect children and athletes from injury.
Rubber granules are used on various surfaces. (illustrative photo)
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They discovered that he could be dangerous
When researching granulate rubber, the researchers looked at three commonly used sizes and found troubling results. They found that the material contained high levels of toxic compounds called polycyclic aromatic hydrocarbons (PAHs). “Fine particles are more reactive and release a greater proportion of toxic compounds into water and soil, increasing the risk to ecosystems and potentially to human health,” said Patryk Oleszczuk, lead author of the study.
These substances may pose a risk if inhaled, swallowed or absorbed through the skin. Experts warn of a connection with complications during fetal development, damage to the liver and reproductive organs, or even cancer. For this reason, they already recommend washing your hands after playing on courts with rubber granules and limiting the time spent on this surface during extreme heat.
The rubber granulate comes from old tires. (illustrative photo)
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Adverse health effects
To better understand the potential risks, the Polish team measured the total amount of PAHs in the recycled material and the proportion that can dissolve in water and be absorbed by living organisms. He found that total levels ranged from 49 to 108 milligrams per kilogram, depending on particle size, with the smallest particles containing the most toxins.
Later, the researchers exposed tiny soil invertebrates called tadpoles, along with watercress plants, to solid rubber granulate and water in which it had been soaked.. All organisms were shown to exhibit adverse effects. While larger particles caused less damage, the smallest grains significantly reduced the chances of survival or growth. Scientists have also noted the presence of potentially toxic metals such as zinc and copper in the water extracted from the rubber.
The findings are particularly concerning because granulated rubber is often used in places where adults and children come into direct contact with it. “We have confirmed that the environmental safety of tire rubber is strongly dependent on particle size. Fine rubber granules are a risk and should be strictly regulated, especially in public places such as playgrounds and sports fields“consulted Oleszczuk.
Finally, Polish scientists noted that although tire recycling is an important environmental goal, according to them, it is not a guarantee of safety. “This study points to the need to rethink how such materials are used. Sustainability should not be at the expense of protecting the environment or peopleOleszczuk concluded.
