– För det första måste spridningen av mikroplaster i samhället minska, och för det andra måste vi se till att så lite som möjligt når vattenmiljön.
Stor andel mikroplast i Östersjön från dag- och avloppsvatten
VATTEN En ny kartläggning av sand- och sedimentprover från hela Östersjöregionen visar att den största delen mikroplast kommer från landbaserade urbana källor. Den mest kostnadseffektiva lösningen, förutom att minska spridningen av mikroplaster i samhället, är genom ökad rening av så kallat bräddvatten.

Enligt analysen kommer det mesta av mikroplasten i Östersjön från landbaserade urbana källor där avrinningen av dagvatten och renat avloppsvatten står för hela 62 procent. Foto: Adobe Stock
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Det säger Mikael Olshammar, projektledare på IVL Svenska Miljöinstitutet. Han har varit med och sammanställt kartläggningar av 190 sand- och sedimentprover från hela Östersjöregionen där närmare 10 000 mikroplastbitar analyserats inom projektet Bonus Micropoll.
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