caa a22 4500 445880449 CHVBK 20180317145541.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0590-7 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0590-7 Dipyridylamine-modified nanoporous silicas as new sorbents for the separation and pre-concentration of palladium [Elektronische Daten] [Kheyrollah Mehrani, Azadeh Mehrani, Mostafa Amini, Omid Sadeghi, Najmeh Tavassoli] Nanoporous silicas of the type SBA-15 (Santa Barbara Amorphous) and MCM-48 (Mobile Composition of Material) were modified with dipyridylamine (dipy) and used as solid phases for the extraction of Pd(II) ions. The experimental conditions (pH, sample and eluent flow rates, type and quantity of eluent) were optimized. The recovery values were ~ 99.7 and ~ 93.4% for dipy-MCM-48 and dipy-SBA-15, respectively, the limits of detection were <0.08 and <0.11ng L−1, the pre-concentration factors were 725 and 550, and the adsorption capacity was >78mg g−1. The procedure was applied to the preconcentration of Pd(II) in real samples. Figure Nanoporous silicas of the type SBA-15 and MCM-48 were modified with dipyridylamine and used as solid-phase for the extraction of Pd(II) ions. The experimental conditions were optimized and the recovery values were determined. The procedure was applied to the pre-concentration of Pd(II) in real samples. Springer-Verlag, 2011 Solid phase extraction nationallicence Mesoporous silica nationallicence Dipyridylamine nationallicence Palladium nationallicence Mehrani Kheyrollah Department of Chemistry, Islamic Azad University, Science and Research Branch, Tehran, Iran aut Mehrani Azadeh Department of Chemistry, Tarbiat Modarres University, Tehran, Iran aut Amini Mostafa Department of Chemistry, Shahid Beheshti University, G.C., Tehran, Evin, Iran aut Sadeghi Omid Department of Chemistry, Shahid Beheshti University, G.C., Tehran, Evin, Iran aut Tavassoli Najmeh Department of Chemistry, Shahid Beheshti University, G.C., Tehran, Evin, Iran aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 521-527 0026-3672 173:3-4<521 2011 173 604 https://doi.org/10.1007/s00604-011-0590-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0590-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mehrani Kheyrollah Department of Chemistry, Islamic Azad University, Science and Research Branch, Tehran, Iran aut NATIONALLICENCE 700 1- Mehrani Azadeh Department of Chemistry, Tarbiat Modarres University, Tehran, Iran aut NATIONALLICENCE 700 1- Amini Mostafa Department of Chemistry, Shahid Beheshti University, G.C., Tehran, Evin, Iran aut NATIONALLICENCE 700 1- Sadeghi Omid Department of Chemistry, Shahid Beheshti University, G.C., Tehran, Evin, Iran aut NATIONALLICENCE 700 1- Tavassoli Najmeh Department of Chemistry, Shahid Beheshti University, G.C., Tehran, Evin, Iran aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 521-527 0026-3672 173:3-4<521 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer