The smallest microplastics in our oceans – which go largely undetected and are potentially harmful – could be more effectively identified using an innovative and inexpensive new method, developed by researchers at the University of Warwick.

New research, led by Gabriel Erni-Cassola and Dr. Joseph A. Christie-Oleza from Warwick’s School of Life Sciences, has established a pioneering way to detect the smaller fraction of microplastics – many as small as 20 micrometres (comparable to the width of a human hair or wool fibre) - using a fluorescent dye.

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