Joelington do C. Conceição,, Antônio Santos Silva, Antônio Wilson M. de C. Costa, Antônio Wilson M. de C. Costa, Edilson de Jesus and Victor Hugo S. Ramos 2021. Biosortion of Cr(VI) from Aqueous Solutions Using Chemically Modified Okra Powder. Journal of Basic & Applied Sciences. 10, (Oct. 2021), 73–79. DOI:https://doi.org/10.6000/1927-5129.2014.10.11.