Selection of a density separation solution to study microplastics in tropical riverine sediment

Thi Thuy Duong , Phuong Thu Le , Thi Nhu Huong Nguyen , Thi Quynh Hoang , Ha My Ngo , Thi Oanh Doan , Thi Phuong Quynh Le , Huyen Thuong Bui , Manh Ha Bui , van Tuyen Trinh , Thuy Lien Nguyen , Nhu da Le , Thanh Mai Vu , Thi Kim Chi Tran , Tu Cuong Ho , Ngoc Nam Phuong , Emilie Strady (1)

1 MIO - Institut méditerranéen d'océanologie

Microplastics (MPs) are small (<5 mm) plastic particles that are widely found in marine, freshwater, terrestrial and atmospheric environments. Due to their prevalence and persistence, MPs are considered an emerging contaminant of environ- mental concern. The separation and quantitation of MPs from freshwater sediments is a challenging and critical issue. It is necessary to identify the fate and sources of MPs in the environment, minimise their release and adverse effects. Compared to marine sediments, standardised methods for extracting and estimating the amount of MPs in freshwater sediments are relatively limited. The present study focuses on MP recovery efficiency of four commonly used salt solutions (NaCl, NaI, CaCl 2 and ZnCl 2) for isolating MPs during the density separation step from freshwater sediment. Known combinations of artificial

Domaines: Sciences de l'environnement

Thi Thuy Duong, Phuong Thu Le, Thi Nhu Huong Nguyen, Thi Quynh Hoang, Ha My Ngo, et al.. Selection of a density separation solution to study microplastics in tropical riverine sediment. Environmental Monitoring and Assessment, 2022, 194 (2), pp.65. ⟨10.1007/s10661-021-09664-0⟩. ⟨hal-03597257⟩