Qamar Sultana, Abdul Naeem, Tahira Mahmood, Nadir Khan, Asad Habib, and Salah ud Din , Trans., “Anion Exchange Sorption of Chromate from Aqueous Solutions by Activated Carbon”, Pak. J. Anal. Environ. Chem., vol. 19, no. 2, pp. 160 – 168, Dec. 2018, doi: 10.21743/pjaec/2018.12.18.