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Comparision protocols for extraction of microplastics in water samples

In this study, we evaluated and compared the effectiveness of four different protocols (D, MJ, MA, and S) for separating MPs from water of different types (brackish, marine, and river). Known combinations of MP particles (polyethylene (PE), polyethylene terephthalate (PET), polystyrene (PS) and polyvinyl chloride (PVC) with size ranging between 150 μm and 700 μm were spiked into water samples. Our results showed that the average recovery effectiveness of microplastics using four studied methods ranged from 53% to 86%. | Vietnam Journal of Marine Science and Technology 2023 23 1 103 112 Vietnam Academy of Science and Technology Vietnam Journal of Marine Science and Technology journal homepage vjs.ac.vn index.php jmst Comparision protocols for extraction of microplastics in water samples Dinh Hai Ngoc1 2 Duong Thanh Nghi1 Cao Thi Thanh Nga2 3 Le Thi Phuong Quynh4 Doan Thi Oanh5 Nguyen Trung Kien6 Duong Thi Thuy2 6 1 Institute of Marine Environment and Resources VAST Vietnam 2 Graduate University of Science and Technology VAST Vietnam 3 Institute of Human Geography VASS Vietnam 4 Institute of Natural Product Chemistry VAST Vietnam 5 Faculty of Environment Hanoi University of Natural Resources and Environment Hanoi Vietnam 6 Institute of Environmental Technology VAST Vietnam Received 7 August 2022 Accepted 21 October 2022 ABSTRACT Microplastics MPs are increasing recognized as emerging pollutants in various environmental components. However protocols for sampling analyses and standardization of measurements in MPs research are under development. The extraction method is a cruciak factor that affects the accuracy and comparability of microplastic data. In this study we evaluated and compared the effectiveness of four different protocols D MJ MA and S for separating MPs from water of different types brackish marine and river . Known combinations of MP particles polyethylene PE polyethylene terephthalate PET polystyrene PS and polyvinyl chloride PVC with size ranging between 150 μm and 700 μm were spiked into water samples. Our results showed that the average recovery effectiveness of microplastics using four studied methods ranged from 53 to 86 . Notably the recovery efficiency of light-density MPs was higher than that of heavy-density MPs. For purified water samples PW obtained from a filtration system using only H2O2 was effective in recovering MPs with an efficiency of 80 6.61 . The S method for MP extraction which combines SDS Bioenzyme H2O2 30 and a saturated salt solution using .