Chen Zhicheng, Yu Shoujun, Fu Qunce, et al. A Model Study on the Formation of Compound of Humic Acid and REE under Weathering Conditions in the Weathering Crust REE Deposits[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1996,35(5):103-108.
Chen Zhicheng, Yu Shoujun, Fu Qunce, et al. A Model Study on the Formation of Compound of Humic Acid and REE under Weathering Conditions in the Weathering Crust REE Deposits[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1996,35(5):103-108.DOI:
The humic acid and its characteristics in the weathering crust REE deposits were studied. The possibility of formation of compounds between humic acid and La
Ce
Pr
Sm
Eu
Gd
Tb and Y under normal temperature and pressure and pH 4 ̄6 5 was confirmed. Based on the studies of fluorescence and infrared spectra
the chemical interactions between humic acid and REEs under weathering conditions and the role of fluvic acid in the formation of weathering crust REE deposits were explored.