Investigation of different polymerization methods on the analytical performance of palladium(II) ion imprinted polymer materials

被引:96
作者
Daniel, S [1 ]
Rao, PP [1 ]
Rao, TP [1 ]
机构
[1] CSIR, Reg Res Lab, Trivandrum 695019, Kerala, India
关键词
polymerization methods; bulk; precipitation; suspension; palladium(II); ion imprinted polymers; preconcentration and separation;
D O I
10.1016/j.aca.2004.12.052
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Palladium(II) ion imprinted polymer (IIP) materials were prepared via bulk, precipitation and suspension polymerization methods using similar compositions. In these polymerization methods, the polymerization mixture consists of a ternary complex of palladium(II) imprint ion with 8-aminoquinoline (AQ), 4-vinyl pyridine (VP, monomer), 2-hydroxyethyl methacrylate (HEMA, functional monomer), ethylene glycoldimethacrylate (EGDMA, cross-linking monomer), 2,2'-azobisisobutyronitrile (AIBN, initiator) and 2-methoxy ethanol (Porogen). Various polymerization methods were carried out by thermal means and IIP materials thus obtained were leached with 50% (v/v) HCl to obtain leached IIP particles. Control polymer (CP) particles were similarly prepared by all the three polymerization methods. The above synthesized polymer particles were characterized physically and morphologically by using FTIR, TGA, CHN, X-ray diffraction (XRD) and scanning electron microscopic (SEM) techniques. Furthermore, their capacity to rebind palladium(II) was investigated from dilute aqueous solutions and in presence of selected precious and transition elements (which are known to coexist with palladium in its mineral deposits). The rebinding studies of IIP particles obtained via bulk, precipitation and suspension methods reveal that (i) percent enrichment is quantitative with bulk and precipitation, and similar to 72% only in case of suspension; (ii) retention capacities are 28.82, 20.16 and 18.76 mg palladium(II)/g materials, respectively; (iii) selectivity for palladium(II) over other noble and transition elements lies in the order bulk similar to precipitation > emulsion. Moreover, the IIP particles obtained by all three polymerization methods exhibit imprinting effect when compared with respective CP particles. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:197 / 206
页数:10
相关论文
共 27 条
[1]   Lanthanide-imprinted resins prepared by surface template polymerization [J].
Araki, K ;
Yoshida, M ;
Uezu, K ;
Goto, M ;
Furusaki, S .
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2000, 33 (04) :665-668
[2]  
BEAMISH FE, 1972, RECENT ADV ANAL CHEM, P311
[3]  
BERMAN E, 1980, TOXIC METALS THEIR A, P177
[4]   Preconcentrative separation of palladium(II) using palladium(II) ion-imprinted polymer particles formed with different quinoline derivatives and evaluation of binding parameters based on adsorption isotherm models [J].
Daniel, S ;
Babu, PEJ ;
Rao, TP .
TALANTA, 2005, 65 (02) :441-452
[5]   Ni(II) ion-imprinted solid-phase extraction and preconcentration in aqueous solutions by packed-bed columns [J].
Ersöz, A ;
Say, R ;
Denizli, A .
ANALYTICA CHIMICA ACTA, 2004, 502 (01) :91-97
[6]  
Goto M, 2001, ION EX SOLV, V14, P259
[7]   SPECTROPHOTOMETRIC DETERMINATION OF RUTHENIUM(III) BY TERNARY COMPLEX-FORMATION [J].
JAYA, S ;
RAMAKRISHNA, TV .
ANALYST, 1982, 107 (1276) :828-832
[8]   SPECTROPHOTOMETRIC DETERMINATION OF RHODIUM(III) IN THERMOCOUPLE WIRES USING THIOCYANATE AND RHODAMINE-6G [J].
JAYA, S ;
RAO, TP ;
RAMAKRISHNA, TV .
ANALYST, 1983, 108 (1290) :1151-1155
[9]   COMPLEX-FORMING POLYMERIC SORBENTS WITH MACROMOLECULAR ARRANGEMENT FAVORABLE FOR ION SORPTION [J].
KABANOV, VA ;
EFENDIEV, AA ;
ORUJEV, DD .
JOURNAL OF APPLIED POLYMER SCIENCE, 1979, 24 (01) :259-267
[10]   Preconcentrative separation of erbium from Y, Dy, Ho, Tb and Tm by using ion imprinted polymer particles via solid phase extraction [J].
Kala, R ;
Gladis, JM ;
Rao, TP .
ANALYTICA CHIMICA ACTA, 2004, 518 (1-2) :143-150