caa a22 4500 46911035X CHVBK 20180323133109.0 cr unu---uuuuu 170328e19921101xx s 000 0 eng 10.1007/BF02037483 doi (NATIONALLICENCE)springer-10.1007/BF02037483 Solid phase extraction for sample preparation in trace analysis of ionogenic compounds by capillary isotachophoresis [Elektronische Daten] [M. Hutta, D. Kaniansky, E. Šimuničová, V. Zelenská, V. Madajová, A. Šišková] Various sorbents recommended for solid phase extraction (SPE) in sample preparation procedures were studied for use in combination with capillary isotachophoresis (ITP). They were very efficient in achieving trace concentration levels (low ppb, i.e., low parts per 109) for different types of ITP analytes present in environmental and biological matrices. A macroporous carbon sorbent was convenient for sample preparation in ITP analysis of short chain fatty acids (C4−C9) in drinking water. Chelating sorbents based on hydroxyalkyl methacrylate matrix with salicylate, thioglycolate and 8-hydroxyquinolinate functionalities were found to be very suitable for preconcentration of heavy metals with an inherent sample clean-up. An octadecyl-bonded silica sorbent enabled in ITP a photometric detection of γ-aminobutyrate (labeled with a 2,4,6-trinitrophenyl group) at concentrations considerably lower than required for the determination of this amino acid in cerebrospinal fluid (∼5·10−8 mol/l). Akadémiai Kiadó, 1992 Hutta M. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut Kaniansky D. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut Šimuničová E. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut Zelenská V. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut Madajová V. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut Šišková A. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 163/1(1992-11-01), 87-98 0236-5731 163:1<87 1992 163 10967 https://doi.org/10.1007/BF02037483 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02037483 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hutta M. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut NATIONALLICENCE 700 1- Kaniansky D. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut NATIONALLICENCE 700 1- Šimuničová E. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut NATIONALLICENCE 700 1- Zelenská V. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut NATIONALLICENCE 700 1- Madajová V. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut NATIONALLICENCE 700 1- Šišková A. Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina CH-2, CS-842 15, Bratislava, (Czecho-Slovakia) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 163/1(1992-11-01), 87-98 0236-5731 163:1<87 1992 163 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer