Fate and spatial distribution of Pb, Cd, Cu and Zn in the water column and in the surface sediment of Indonesian Estuary (Citarum River Estuary)Nurul Fahimah, Katharina Oginawati and SuharyantoE3S Web Conf., 148 (2020) 07007DOI: https://doi.org/10.1051/e3sconf/202014807007