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Science
Dalia Saad, Researcher, School of Chemistry, University of the Witwatersrand, University of the Witwatersrand

Fish in a major South African river are full of microplastics

People fish in the Vaal River but are not always aware of the risks associated with microplastic pollution. Grobler du Preez/Shutterstock

We are living in the plastic age. Plastics are literally everywhere: clothes, furniture, computers, phones and more contain plastic materials. It’s no wonder, then, that the food we eat, the water we drink and even the air we breathe is contaminated with microplastics.

These tiny plastic particles are smaller than 5 mm in diameter. Some, known as secondary microplastics, are formed from the breakdown of larger plastic items. In natural environments like rivers, plastics are exposed to different degradation processes driven by thermal, chemical, microbial and mechanical forces.

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