Microplastics, usually defined as pieces of plastic that are less than 5 mm in size, are a global environmental and potential health issue. Morphologically-Directed Raman Spectroscopy (MDRS®) can help research into the origin and fate of microplastics by enabling component specific data to be obtained from multi-component samples. A single automated measurement provides particle size and shape data for each different microplastic type chemically identified using Raman spectroscopy. This application note explores the use of MDRS on the Morphologi 4-ID to characterize and identify a mixture of six types of microplastic collected on a membrane filter.

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