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TARA-JAMBIO Microplastic Survey: A study of microplastic pollution in coastal areas of Japan
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Researchers conducted the TARA-JAMBIO Joint Microplastics Survey to characterize microplastic pollution in Japanese coastal waters, filling a knowledge gap on the quantity, sources, and spatial distribution of nearshore marine microplastics through a collaboration between the Tara Ocean Foundation and the Japanese Association for Marine Biology.
The Tara Ocean Foundation has partnered with the Japanese Association for Marine Biology (JAMBIO) to investigate microplastic (MP) pollution in Japanese coastal waters. Although the presence of microplastics in the marine environment has been widely discussed in scientific literature, there is still a crucial lack of knowledge on the quantity, sources, and distribution of marine microplastics, especially in near shore waters. The TARA-JAMBIO Joint Microplastics Survey mission aims to provide data on the distribution and drivers of MPs in surface water and sediment in Japanese coastal areas. Surface water and sediment samples were collected using Neuston net (315µm mesh) and Smith McIntyre Grab Sampler in 14 areas along transects from river to open ocean. For quantitative analysis, wet peroxide oxidation using Fenton`s reagent was used for sample digestion followed by density separation using NaCl 1.22 g ml-1. The average MP concentration was 286 g km-2 ± 641 g km-2 and 1,185 kg km-2 ± 3,829 kg km-2 in surface water and sediment, respectively. Polymer characterization of particles suspected to be microplastic (N=11,701) was conducted using a Ni10 ThermoFisher µFT-IR (700-3900 cm-1). Polyethylene, polypropylene and polystyrene were the main polymer types in both surface water (59 Also see: https://micro2024.sciencesconf.org/558657/document
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