Baseline concentration of microplastics in surface water and sediment of the northern branches of the Mekong River Delta, Vietnam
Résumé
The Mekong River Delta in Vietnam, is conce rned by numerous micropl astic-related issues such as a lack of waste wate r tre atment facilities and mismanage ment of plastic waste released from agriculture, aquacult ure and related activities. This study ai med to examine the presence of microplastics in surface water and sedi ment by collecting samples from siX sites along the Tien River and its distributaries in February 2019. The results showed that the average concentration of microplastics over the entire area was 53.8 ± 140.7 items m-3 in surface water and 6.0 ± 2.0 items g-1 dried wei ght in sedi ment, wi th a pre domi nance of microplastic fibres rat he r t han fragments, respectively 85 % and 98 % in surface water and sediment. In t he main flow of surface wate r, t he concentration of microplastics was stable; however, in t he sedi ment, micropl astic concent ration was affected by the high dynamic flow regime rather than the sources where microplastics are released.
Domaines
Biodiversité et EcologieOrigine | Fichiers produits par l'(les) auteur(s) |
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