Every year, the world’s billions of vehicles release a total of nearly 6 million tons of tire chips into the environment. These tiny pieces of rubber, produced by the wear and tear of everyday driving, eventually end up in the soil, rivers and lakes, and even in our food. A study in southern China recently found tire derivatives in the majority of people’s urine samples.
Tire pollution is a significant, yet often overlooked, source of microplastic pollution. 28% of global microplastics come from this source. Although the dimensions of the problem are significant, tire particles have so far received little attention. They are often classified in the general category of microplastics, even though their unique characteristics require a different approach.
There is an urgent need to treat tire particles as an independent category of pollution. One international study says this approach could lead to more targeted research that could help regulations aimed at reducing tire pollution. In addition, the population would also better understand the dimensions of the problem and what they can do about it.
Currently, South Korean delegates are working to reach the first global plastic pollution convention. Although this landmark agreement covers many aspects of plastic pollution, tire particles are barely on the agenda. Considering their significant contribution to microplastics, recognition of tire pollution as a unique problem could help with targeted solutions and shaping public awareness.
Tire particles are composed of complex mixtures containing synthetic and natural rubbers and hundreds of chemical additives. Therefore, the consequences of tire pollution can be unexpected and far-reaching. For example, zinc oxide makes up about 0
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