Shanxi Engineering Research Center of Biorefinery of Coal Chemistry Academy of Sciences;
Center of Materials Science and Optoelectronics Engineering of Chinese Academy of Sciences;
Department of Chemistry of Copenhagen 5-2100;
State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Center for Magnetic Resonance Institute of Physics and Mathematics Academy for Precision Measurement Science and Technology Academy of Sciences;
Coal chemical wastewater; 3D DOSY NMR; ANALYSIS; SEPARATION; Structural characterization;