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liquid solid extraction
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     Liquid Light
     液体光阀
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     Liquid Crystal
     液晶化学
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     Liquid-Solid Extraction
     液—固萃取
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This paper reports the separation of chromium (Ⅲ) by liquid-solid extraction with 5-Br-PADAP and molten naphthalene. Chromium(Ⅲ)is quantitatively extracted from 1M NaAc-Cl_3 CCOOH medium which pH is 3.5±0.1.The apparent molar absorptivity is 4.7×10~4l·mol~(-1)·cm~(-1) at 590nm. The countituent of complex is established as Cr:Cl_3Ac~-:5-Br-PADAP=1:2:1. This system obeys Beer's Law in the range of 0~10r Cr/5ml (CHCl_3). This method has been used in the microgram amounts determination of chromium...

This paper reports the separation of chromium (Ⅲ) by liquid-solid extraction with 5-Br-PADAP and molten naphthalene. Chromium(Ⅲ)is quantitatively extracted from 1M NaAc-Cl_3 CCOOH medium which pH is 3.5±0.1.The apparent molar absorptivity is 4.7×10~4l·mol~(-1)·cm~(-1) at 590nm. The countituent of complex is established as Cr:Cl_3Ac~-:5-Br-PADAP=1:2:1. This system obeys Beer's Law in the range of 0~10r Cr/5ml (CHCl_3). This method has been used in the microgram amounts determination of chromium with satisfactory results.

本文报道了用5-Br-PADAP和熔融萘固-液萃取分离铬(Ⅲ)。在pH3.5的1M醋酸钠-三氯乙酸介质中铬(Ⅲ)定量被萃取。表观摩尔吸光系数为4.7×10~4l·mol~(-1)·cm~(-1),最大吸收波长590nm。确定该络合物的组成为Cr:Cl_3Ac-:5-Br-PADAP=1:2:1。在0-10r Cr/5ml(CHCl_3)范围服从毕尔定律。本法用于痕量铬的测定效果令人满意。

A review describing mainly the liquid-solid extraction of metal ions by loaded polyurethane foam is given, with a discussion about the factors affecting the separation.

本文综述了负载泡塑萃取金属离子的应用进展,探讨了影响负载泡塑萃取分离的有关因素。

An aqueous solution of Triton X-100 containing the salt can separate into the polymer solid phase and the salt aqueous phase. This is a new liquid-solid extraction system without organic solvents. the extraction behaviour of Pd(Ⅱ ), Bi(Ⅲ ),Zn(Ⅱ ) and Fe(Ⅲ ) was investigated by using NH4I as extractant in the liquid-solid extraction system. The quantitative extraction separation and determination of Bi (Ⅲ ) Fe (Ⅲ) and Pd (Ⅱ ) Zn (Ⅱ) were achieved. The...

An aqueous solution of Triton X-100 containing the salt can separate into the polymer solid phase and the salt aqueous phase. This is a new liquid-solid extraction system without organic solvents. the extraction behaviour of Pd(Ⅱ ), Bi(Ⅲ ),Zn(Ⅱ ) and Fe(Ⅲ ) was investigated by using NH4I as extractant in the liquid-solid extraction system. The quantitative extraction separation and determination of Bi (Ⅲ ) Fe (Ⅲ) and Pd (Ⅱ ) Zn (Ⅱ) were achieved. The experimental results indicate that the comples anions, formed by the metal ions with I, can be extracted into the Triton X-100 solid phase.

TritonX-100的盐水溶液会分成聚合物固相和盐水相。这是一种新的非有机溶剂液-固萃取体系。研究了在该萃取体系中用NH4I作萃取剂,Pd(Ⅱ)、Bi(Ⅲ)、Zn(Ⅱ)和Fe(Ⅲ)等金属离子的萃取行为。实现了Bi(Ⅲ)—Fe(Ⅲ)和Pd(Ⅱ)—Zn(Ⅱ)间的定量萃取分离与测定。实验结果表明,金属离子与I-形成络阴离子被萃入聚合物固相。

 
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