Characterizing local Garden Croton (‘pokok puding’) leaf powder as low cost biomaterial for Chromium(VI) uptakeSannasi Palsan, Wan Nurul Aisyah Wan Jusoh and Hemagowsalya SubramaniamMATEC Web Conf., 87 (2017) 03003DOI: https://doi.org/10.1051/matecconf/20178703003