caa a22 4500 445880643 CHVBK 20180317145541.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0576-5 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0576-5 Synthesis and characterization of an ion-imprinted polymer for selective solid phase extraction of thorium(IV) [Elektronische Daten] [Zhiqiang Cheng, Hongqing Wang, Yuyuan Wang, Fangfang He, Haisheng Zhang, Shiqing Yang] A new surface ion-imprinted composite polymer containing 3-methyl-1-phenyl −4-(cis-acylbutenoic acid)-2-pyrazolin-5-one as the functional reagent is presented that is capable of extracting and preconcentrating traces of Th(IV) ion prior to its photometric determination. Parameters affecting the recovery of Th(IV) such as acidity, shaking time, initial concentration of Th(IV), elution condition, sample flow rate, and influence of potentially interfering ions were investigated. The maximum uptake capacity of this material and that of the non-imprinted polymer at pH 4.5 are 56.8 and 26.3mgg−1, respectively. Recovery exceeds 95% and is complete within 5min. A Langmuir isotherm fits the experimental data. The relative selectivity factor for Th(IV)/U(VI), Th(IV)/La(III), and Th(IV)/Ce(III) are 50.8, 78.3, and 82.6, respectively. The relative standard deviation is <2.5%, the detection limit is 0.54μgL−1 (3σ). The imprinted polymer was coupled to spectrophotometry to separate and determine trace levels of Th(IV) in a soil standard material with satisfactory results. A new surface imprinted composite polymer containing MPABAP as the functional reagent was synthesized, and a relative standard deviation (R.S.D.) less than 2.5% and a detection limit of 0.54μgL−1 (3σ) of the present method under the optimized conditions were obtained. Springer-Verlag, 2011 Thorium(IV) nationallicence 4-acyl pyrazolone nationallicence Solid phase extraction nationallicence Ion-imprinted polymer nationallicence Pre-concentration nationallicence Cheng Zhiqiang School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut Wang Hongqing School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut Wang Yuyuan School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut He Fangfang School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut Zhang Haisheng School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut Yang Shiqing School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 423-431 0026-3672 173:3-4<423 2011 173 604 https://doi.org/10.1007/s00604-011-0576-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0576-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cheng Zhiqiang School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut NATIONALLICENCE 700 1- Wang Hongqing School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut NATIONALLICENCE 700 1- Wang Yuyuan School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut NATIONALLICENCE 700 1- He Fangfang School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Haisheng School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut NATIONALLICENCE 700 1- Yang Shiqing School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road Hengyang, 421001, Hunan, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 423-431 0026-3672 173:3-4<423 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer