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Multidecadal increase of plastic particles in coastal ocean sediments

Abstract We analyzed coastal sediments of the Santa Barbara Basin, California, for historical changes in microplastic deposition with a box core that extended over the years 1834-2009. The sediment was visually sorted by plastic and a subset confirmed as plastic polymers by FTIR spectroscopy (Fourier transform infrared spectroscopy). After correcting contaminants introduced during sample processing, we noted an exponential increase …

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