| 成相无机盐种类对PEG双水相相平衡影响 |
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| 引用本文： | 刘杨,虞永蕾,苏红彩,崔鹏飞.成相无机盐种类对PEG双水相相平衡影响[J].化学研究与应用,2011,23(9):1205-1208. |
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| 作者姓名： | 刘杨 虞永蕾 苏红彩 崔鹏飞 |
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| 作者单位： | 汕头大学理学院生物系,广东汕头,515063 |
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| 基金项目： | 国家自然科学基金项目(No.21006062)资助 |
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| 摘 要： | 不同种类无机盐分别与PEG1000、PEG2000、PEG,4000和PEG6000构成双水相体系,在298.15K下,采用浊点滴定法研究双水相体系相平衡,通过Merchuk经验方程拟合实验点确定双水相体系的双节线,进而考察成相无机盐种类对PEG双水相相平衡的影响.结果表明:具有相同阴离子,易于形成双水相的无机盐顺序为...
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| 关 键 词： | 双水相 相平衡 无机盐 PEG 双节线 |
Effect of salt on the aqueous two-phase system equilibrium comprising PEG |
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| LIU Yang,YU Yong-lei,SU Hong-cai,CUI Peng-fei.Effect of salt on the aqueous two-phase system equilibrium comprising PEG[J].Chemical Research and Application,2011,23(9):1205-1208. |
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| Authors: | LIU Yang YU Yong-lei SU Hong-cai CUI Peng-fei |
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| Institution: | LIU Yang,YU Yong-lei,SU Hong-cai,CUI Peng-fei(Department of Biology,College of Science,Shantou University,Shantou 515063,China) |
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| Abstract: | Aqueous two-phase systems composed of PEG with different molecular weight and various salt were investigated by cloud-point measurement at T=298.15K,respectively.The experimental binodal data of the aqueous two-phase systems were fitted by Merchuk empirical nonlinear expression,and the effect of salt type on phase equilibrium was analyzed.The results displayed that the two-phase forming power for cationic ions followed the order Na2SO4>MgSO4>(NH4)2SO4>Li2SO4,and for anionic ions followed the order Na2SO4>Na... |
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| Keywords: | aqueous two-phase phase equilibrium salt PEG binodal curve |
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