| 提取腐殖酸后的褐煤残渣对水中Cr(Ⅵ)的吸附研究 | 
| 王茁伊,付鹏,王润琪,刘鹏,于妍 | 
| Study on the adsorption of Cr (Ⅵ) in water by lignite residue after humic acid extraction | 
| Zhuoyi WANG,Peng FU,Runqi WANG,Peng LIU,Yan YU | 
| 图7 吸附前后褐煤残渣的红外光谱 | 
| Fig. 7 Fourier infrared spectra of lignite residue before and after adsorption | 
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