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三元体系Na_3PO_4—H_2NCONH_2—H_2O298K相平衡及平衡液相物化性质研究 被引量:2

Experimental Study on the Phase Equilibrium of the Ternary System NaVO_3—H_2NCONH_2—H_2O at 298K and Physicochemical Properties of Equilibrium Liquid Phase
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摘要 采用等温溶解平衡法测定了三元体系Na3PO4—H2NCONH2—H2O 298K下的溶解度及平衡液相物化性质(密度、电导率、pH值),绘制出了相应的溶解度等温图和物化性质—组成图。此三元体系等温溶解度图属简单共饱型,未产生新的复盐和固溶体。两个结晶区分别对应为盐Na3PO4.8H2O和H2NCONH2。无变量点平衡液相组成为:w(Na3PO4.8H2O)1.49%,w(H2NCONH2)25.41%,对应的平衡固相盐为Na3PO4.8H2O和H2NCONH2。实验结果表明,Na3PO4与H2NCONH2的溶解度相互抑制,并简要讨论了物化性质的变化规律。 The solubilities and physicochemical properties(density,conductivity and pH value) of equilibrium liquid phase were determined in the ternary system Na3PO4-H2NCONH2-H2O at 298K by isothermal solution equilibrium method. According to the experimental data, the isothermal diagram and physicochemical properties-composition diagrams of the ternary system were ploted. This ternary system is a simple evtonic type, no double salt or solid solution is formed. The isotherm diagram consists of two univariant curves and two crystallization fields correspondinig to Na3PO4 · 8H2O and H2NCONH2. The composition of equilibrium liquid phase of invariant point is as follows : w ( Na3 PO4 · 8H2O ) 1.49%, w ( H2 NCONH2 ) 25.41%. The solubility of Na3 PO4 and H2 NCONH2 inhibited with each other. The laws of physicochemical properties in the solution were discussed briefly.
作者 彭芸 曾英
出处 《盐业与化工》 CAS 北大核心 2007年第6期7-9,共3页 Jounral of Salt and Chemical Industry
基金 四川省教育厅青年科学基金(2003B027) 四川省应用基础研究基金(04JY029-008-1) 中国地质调查局项目(200314200015)联合资助
关键词 Na2PO4·8H2O 三元体系 等温溶解平衡法 物化性质 Na3PO4 ·8H2O ternary system isothermal solution equilibrium method physicochemical properties
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  • 1Graeme D. Batten. A review of phosphorus efficiency in wheat[J] 1992,Plant and Soil(1-2):163~168
  • 2J. R. Caradus,A. D. Mackay,S. Wewala,J. Dunlop,A. Hart,J. Bosch,M. G. Lambert,M. J. M. Hay. Inheritance of phosphorus response in white clover (Trifolium repens L.)[J] 1992,Plant and Soil(1-2):199~208
  • 3Tara Singh Gahoonia,Norbert Claassen,Albrecht Jungk. Mobilization of phosphate in different soils by ryegrass supplied with ammonium or nitrate[J] 1992,Plant and Soil(2):241~248
  • 4R. S. Reiter,J. G. Coors,M. R. Sussman,W. H. Gabelman. Genetic analysis of tolerance to low-phosphorus stress in maize using restriction fragment length polymorphisms[J] 1991,Theoretical and Applied Genetics(5):561~568
  • 5Ellis Hoffland,Günter R. Findenegg,Jacob A. Nelemans. Solubilization of rock phosphate by rape[J] 1989,Plant and Soil(2):161~165
  • 6T. Bekele,B. J. Cino,P. A. I. Ehlert,A. A. Maas,A. Diest. An evaluation of plant-borne factors promoting the solubilization of alkaline rock phosphates[J] 1983,Plant and Soil(3):361~378
  • 7W. K. Gardner,D. A. Barber,D. G. Parbery. The acquisition of phosphorus byLupinus albus L.[J] 1983,Plant and Soil(1):107~124
  • 8K. K. S. Bhat,P. H. Nye. Diffusion of phosphate to plant roots in soil[J] 1974,Plant and Soil(2):365~382
  • 9D. G. Lewis,J. P. Quirk. Phosphate diffusion in soil and uptake by plants[J] 1967,Plant and Soil(3):445~453

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