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Citation: HUANG Yi, NI Shi-Jun, SANG Shi-Hua, WANG Pei-Dong. Phase Equilibrium of Quaternary Reciprocal System Cd²⁺, Na⁺//Cl^-, SO₄^2--H₂O at 298 K[J]. Acta Physico-Chimica Sinica, ;2008, 24(02): 333-337. doi: 10.3866/PKU.WHXB20080226 shu

Phase Equilibrium of Quaternary Reciprocal System Cd²⁺, Na⁺//Cl^-, SO₄^2--H₂O at 298 K

1.
Department of Geochemistry, Chengdu University of Technology, Chengdu 610059, P. R. China

Received Date: 31 July 2007
Available Online: 11 December 2007

Phase equilibrium of quaternary system Cd2+, Na+//Cl-, SO2-4-H2O at 298 K was studied by isothermal method. The study showed that the quaternary system bearing Cd included Na2CdCl4·3H2O phase field, seven univariant curves, three co-saturation points and five crystal phase fields. The crystal fields of equilibrium solid phases were Na2SO4, CdSO4, CdCl2·2.5H2O, Na2CdCl4·3H2O and NaCl, respectively. The physico-chemical properties of solution in the quaternary system indicated regular change along with the increase of Cd2+ concentration. The results indicated that Cd salts possess quite high solubilities in the system studied, which means a strong transfer of Cd2+ and a high pollution risk of soil environment.
- Cadmium; Quaternary reciprocal system; Isothermal method; Phase equilibrium
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Phase Equilibrium of Quaternary Reciprocal System Cd2+, Na+//Cl-, SO42--H2O at 298 K

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通讯作者: 陈斌, bchen63@163.com

Phase Equilibrium of Quaternary Reciprocal System Cd²⁺, Na⁺//Cl^-, SO₄^2--H₂O at 298 K