Adsorption Properties of a Modified Adsorbent in Petroleum Analysis by Geochemical and Chemometric Methods. - Badikova, A. D.; Masagutov, R. Kh.; Beigul, N. A.; Sakhibgareev, S. R.; Kulyashova, I. N.; Grigor'eva, S. S. (Chemistry & Technology of Fuels & Oils, 2025)