caa a22 4500 463218639 CHVBK 20180405153205.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1134/S1061934807010030 doi (NATIONALLICENCE)springer-10.1134/S1061934807010030 Effect of support nature on the efficiency of the chemisorption preconcentration of aromatic amines from air [Elektronische Daten] [M. Evgen'ev, I. Evgen'eva, P. Belov, A. Kirillin] The effect of silica gel-modifying additives on the efficiency of the chemisorption preconcentration of aniline, o-toluidine, and N,N-dimethylaniline as 5,7-dinitrobenzofurazan derivatives from atmospheric air was studied by HPLC. The recovery exhibited a maximum on unmodified silica gel, and the recovery of N,N-dimethylaniline was lower than that of primary aromatic amines. This is likely due to a decrease in the possibility of π-complex formation between an aromatic amine and silica gel after the chemical modification of the adsorbent surface. The formation of a π-complex will increase the rate of reaction between an aromatic amine and an electrophilic reagent. Pleiades Publishing, Ltd., 2007 Evgen'ev M. Kazan State Technological University, ul. Karla Marksa 68, 420015, Kazan, Tatarstan, Russia aut Evgen'eva I. Kazan State Technological University, ul. Karla Marksa 68, 420015, Kazan, Tatarstan, Russia aut Belov P. Kazan State Technological University, ul. Karla Marksa 68, 420015, Kazan, Tatarstan, Russia aut Kirillin A. Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, 119571, Moscow, Russia aut Journal of Analytical Chemistry Nauka/Interperiodica 62/1(2007-01-01), 8-11 1061-9348 62:1<8 2007 62 10809 https://doi.org/10.1134/S1061934807010030 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807010030 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Evgen'ev M. Kazan State Technological University, ul. Karla Marksa 68, 420015, Kazan, Tatarstan, Russia aut NATIONALLICENCE 700 1- Evgen'eva I. Kazan State Technological University, ul. Karla Marksa 68, 420015, Kazan, Tatarstan, Russia aut NATIONALLICENCE 700 1- Belov P. Kazan State Technological University, ul. Karla Marksa 68, 420015, Kazan, Tatarstan, Russia aut NATIONALLICENCE 700 1- Kirillin A. Lomonosov State Academy of Fine Chemical Technology, pr. Vernadskogo 86, 119571, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/1(2007-01-01), 8-11 1061-9348 62:1<8 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer