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Quantity and composition of microplastics in littoral sediments from the Eastern coast of the Central Adriatic

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This Croatian undergraduate thesis examined the quantity and composition of microplastics in littoral sediments from the eastern coast of the central Adriatic, characterizing particle shapes and sizes from beach sediment samples. The work adds to regional data on microplastic accumulation in Mediterranean coastal environments.

U ovom diplomskom radu predstavljeni su rezultati istraţivanja količine i kategorije mikroplastike u sedimentima litoralnog pojasa istočnog dijela srednjeg Jadrana. Uzorci sedimenta prikupljeni su ručnim korerom na plaţi Bačvice u Splitu. Laboratorijska obrada uzoraka provedena je pomoću niza prosijavanja kroz sita veličine oka 1 mm i 32 μm, centrifugiranja uzoraka te odvajanja prema gustoći. Prisutnost čestica mikroplastike zabiljeţena je u svim uzorcima. Identificiranje mikroplastike se provelo odvajanjem na vlakna, fragmente i pelete te se biljeţila boja čestica Ukupno je pronaĎeno 1057 čestica mikroplastike/10 cm2, od čega ukupno 868 vlakana/10 cm2, 97 fragmenata/10 cm2 te 92 peleta/10 cm2.Na svim postajama vlakna su zabiljeţena kao najzastupljenije čestice mikroplastike, dok su fragmenti i peleti bili prisutni, ali su pokazali značajno niţe vrijednosti. Broj crnih vlakana je bio 348, bijelih 310, plavih 115 i rozih 95. Broj zelenih fragmenata je bio 39, srebrnih (sivih) 18, bijelih 14, rozih 13, plavih 9 i ţutih 4. Boja svih 92 peleta je prozirna. Na svim postajama zabiljeţene su čestice veličine 32 μm - 1 mm dok čestice > 1 mm nisu zabiljeţene na dvije postaje.

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