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Nanoplastics are produced industrially for uses such as cosmetics and also generated by erosion of consumer plastic products. Nanoplastic properties are largely unstudied; understanding how these particles act will allow us to evaluate their environmental impact, design methods of detection, and remediation. Microplastics bioaccumulate and absorb harmful chemicals. Smaller nano-sized plastics may have an even higher affinity for chemical adsorbtion due to high surface areas, making these tiny particles a contaminant of emerging concern.
Smith, Zachary and Zodrow, Katherine R., "Nanoplastic Settling Potential in Saline Environments" (2017). 2017 Undergraduate Research. 4.