Zhang Z, Ma Y, Qin C, Liu X, Li X, Huang H, et al. Quantitative Determination of Petroleum Hydrocarbons in Oily Sludge Following Efficient N-Heptane Separation. BioRes [Internet]. 2023 Mar. 22 [cited 2025 Dec. 17];18(2):3357-72. Available from: https://ojs.bioresources.com/index.php/BRJ/article/view/22347