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Vertical profile characterization of microplastic concentration at open ocean in Canary Region
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Researchers measured microplastics in ocean water down to 1152 meters near the Canary Islands. Microplastic was found at all depths, with surprisingly high amounts between 95 and 275 meters and again below 600 meters, not just at the surface as most prior studies reported. Most particles found were blue colored.
Nowadays there is no doubt about the presence of microplastic in the ocean, both on the \nsurface and in the sediments, having those a great impact on the marine environment and \norganisms. The types of plastic found vary in composition, physical properties and source \nof income to the ocean, what means that the different densities of each of them cause a \ndifferent distribution in the water column. \nThis study analyses the accumulation of microplastic in the water column, up to 1152m \ndepth in the Canary Islands. The results show accumulation at all depths, varying in \ndistribution, quantity and colors according to the area. On total average, 47,59 fragments \nper liter and 3,93 fibers per liter were found on the stations, being 90% of those of blue \ncolor. Station M02 exhibit the maximum accumulation of microplastic, reaching 7194 \nfragments at 274m, and a total of 17711 from surface to 485 meter deep. So far, most \nstudies mark the largest accumulation of microplastic on the ocean's surface, however, \nour results show a greater accumulation of up to 40% of the total microplastic analyzed \nin certain stations between 95 and 275 meters deep. Moreover, high concentration of \nmicroplastic was also found below 600m depth, obtaining 42,66 fragments per liter and \n5,08 fibers per liter.
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