Ekowati, Girda Wahyu, and Maya Rahmayanti. 2019. “KAJIAN DESORPSI ZAT WARNA INDIGOSOL BLUE DARI ADSORBEN HUMIN HASIL ISOLASI TANAH GAMBUT RIAU, SUMATERA”. Analit : Analytical and Environmental Chemistry 4 (02):68-75. https://doi.org/10.23960/aec.v4i2.2019.p68-75.