Đặc điểm thành phần và phân bố hạt vi nhựa trong môi trường trầm tích tầng mặt khu vực vịnh Tiên Yên

In recent years, microplastics pollution has been strongly threatened the marine environment and marine ecosystems in the world.Previous studies showed that Vietnam is one of the leading countries in plastic wastes discharged to the ocean and microplastics pollution becomes a prior research issue in Vietnam.In the present study, we analyzed the distribution and chemical composition of microplastics in surface sediment samples from Tien Yen Bay, Vietnam.Results showed that microplastic concentrations ranged from 236-1324 particles/kg with the mean value was 66468 particles/kg.The composition of microplastic particles was 8.54%, 4.99%, 84.9% and 1.57% for microfragments, microfoams, microfibers, and microfilms, respectively.Chemical characteristics of microplastics showed that popular plastics such as PE, PP, PA, PVC, PS, PET were found in surface sediment samples of Tien Yen Bay.Microplastic particles were relatively concentrated in the Northern part of Tien Yen Bay and may be related to local anthropogenic activities.The level of microplastics contamination in surface sediments from Tien Yen Bay was relatively higher than other sites in the world, which required effective management measures for reducing microplastic wastes in this area.