Microplastic concentrations in surface water of Urban Lakes in Danang, Vietnam, 2021

Microplastics in water were sampled using a stainless steel bucket and filtered through a plankton net with a mesh size of 80 μm. The samples were extracted in the laboratory using enzymatic digestion and H2O2 30%, density separated by NaCl, and were filtered on GF-A filter.

Then microplastics were observed by a stereomicroscope and classified into groups of shape, color, and size. Microplastic concentration was expressed as the number of particles per m3 (item m-3) for water.