Image processing techniques for measuring primary microplastic abundance in various of dispersantRahmatun Maula, Yuniati Zevi, Rijal Hakiki, Barti Setiani Muntalif and Putri Sandi DaniarE3S Web of Conf., 485 (2024) 04008DOI: https://doi.org/10.1051/e3sconf/202448504008