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Citation: XU Yi, ZHANG Xiao-Feng, ZHANG Jian, XU Ping-Zhou. Anion-exchange Solid Phase Extraction Micro-column Prepared by in-situ Polymerization[J]. Chinese Journal of Applied Chemistry, ;2006, 23(2): 144-148. shu

Anion-exchange Solid Phase Extraction Micro-column Prepared by in-situ Polymerization

XU Yi ^a,b,, ,
ZHANG Xiao-Feng ^c ,
ZHANG Jian ^a ,
XU Ping-Zhou ^a

1.
a Chemistry and Chemical Engineering College;
2.
b Optic-Electron Engineering College, Chongqing University, Chongqing 400044;
3.
c Bioengineering College, Chongqing Institute of Technology, Chongqing

Corresponding author: XU Yi,
Received Date: 8 May 2005
Available Online: 12 August 2005
Fund Project:

According to characteristics of in-situ polymerization of monolithic column,the monolithic porous polymer which was thermally initiated within a glass micro-column was fabricated and applied to anion-exchange solid phase extraction(SPE).The effects of the amounts of the functional monomer,the initiator,the cross-linker,the porogenic solvent,the non-covalent monomer,and the temperature,the atmosphere,and the polymerization time for the reaction on the SPE micro-column properties were discussed.The proportion of all the components and reaction conditions were optimized respectively.The porous structure of the polymer was characterized by means of scanning electron microscopy(SEM).The absorption characteristic of the SPE monolithic micro-column was proved by ultra-violet absorption of NO₂^- at 214 nm.The experimental results show that the home-made anion exchange micro SPE column is of good absorption effect.Absorption efficiency of the micro SPE column could reach 72.4% with off-line sample treatment,and enrichment efficiency could reach 77.9 times with on-line sample treatment.
- in-situ polymerization,
- SPE micro-column,
- separation and concentration
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