Determination of selenite and selenate in drinking water: A fully automatic on-line separation/pre-concentration system coupled to electrothermal atomic spectrometry with permanent chemical modifiers
A time-based flow injection (FI) separation pre-concentration system coupled to an electrothermal atomic absorption spectrometer (graphite furnace) has been developed for the direct ultra-trace determination of selenite and selenate in drinking water. The pre-concentration of both forms of selenium...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2004
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| LEADER | 09765caa a22014657a 4500 | ||
|---|---|---|---|
| 001 | PAPER-21313 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518205245.0 | ||
| 008 | 190411s2004 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0347627267 | |
| 024 | 7 | |2 cas |a chloride, 16887-00-6; graphite, 7782-42-5; hydrochloric acid, 7647-01-0; iridium, 13967-67-4, 7439-88-5; selenate, 13410-01-0, 14124-68-6; selenite, 14124-67-5 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a ACACA | ||
| 100 | 1 | |a Stripeikis, J. | |
| 245 | 1 | 0 | |a Determination of selenite and selenate in drinking water: A fully automatic on-line separation/pre-concentration system coupled to electrothermal atomic spectrometry with permanent chemical modifiers |
| 260 | |b Elsevier |c 2004 | ||
| 270 | 1 | 0 | |m Tudino, M.; Lab. de Análisis de Trazas, Depto. Quim. Inorg., Analitica Q., Ciudad Universitaria, 1428 Buenos Aires, Argentina; email: tudino@qi.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a A time-based flow injection (FI) separation pre-concentration system coupled to an electrothermal atomic absorption spectrometer (graphite furnace) has been developed for the direct ultra-trace determination of selenite and selenate in drinking water. The pre-concentration of both forms of selenium is carried out onto a micro-column packed with an anionic resin (Dowex 1×8) that is placed in the robotic arm of the autosampling device. Selenite and selenate are sequentially eluted with HCl 0.1M and HCl 4M, respectively. The interference of large quantities of chloride during selenium atomisation is prevented by using iridium as a "permanent" chemical modifier. The features of the pre-concentration separation system for both species are: 53% efficiency of retention and an enhancement factor of 82 for a pre-concentration time of 180s (sample flow rate=3mlmin-1) with HCl elution volumes of 100μl. The detection limit (3s) is 10ngl-1 for the two species and the relative standard deviation (n=10) at the 200ngl-1 level is 3.5% for selenite and 5.6% for selenate. The addition of selenite and selenate stock standard solutions to tap water samples yields a 97-103% recovery of both species. © 2003 Elsevier B.V. All rights reserved. |l eng | |
| 536 | |a Detalles de la financiación: UBACyT | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: The authors thank the program of Science and Technology of Buenos Aires University (UBACyT), INQUIMAE and CONICET for financial support. | ||
| 593 | |a Lab. de Análisis de Trazas, Depto. Quim. Inorg., Analitica Q., Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 593 | |a Departamento de Química, Fac. de Ing. Química, Universidad Nacional del Litoral, Santiago del Estero 2829, 3000 Santa Fe, Argentina | ||
| 690 | 1 | 0 | |a DRINKING WATER |
| 690 | 1 | 0 | |a ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY |
| 690 | 1 | 0 | |a FLOW INJECTION |
| 690 | 1 | 0 | |a PERMANENT MODIFIERS |
| 690 | 1 | 0 | |a SELENIUM SPECIATION |
| 690 | 1 | 0 | |a ATOMIZATION |
| 690 | 1 | 0 | |a CHEMICAL MODIFICATION |
| 690 | 1 | 0 | |a CONCENTRATION (PROCESS) |
| 690 | 1 | 0 | |a NEGATIVE IONS |
| 690 | 1 | 0 | |a POTABLE WATER |
| 690 | 1 | 0 | |a RESINS |
| 690 | 1 | 0 | |a ROBOTIC ARMS |
| 690 | 1 | 0 | |a SELENIUM COMPOUNDS |
| 690 | 1 | 0 | |a SEPARATION |
| 690 | 1 | 0 | |a ATOMIC ABSORPTION SPECTROMETERS |
| 690 | 1 | 0 | |a FLOW INJECTION (FI) |
| 690 | 1 | 0 | |a TAP WATER |
| 690 | 1 | 0 | |a TRACE ANALYSIS |
| 690 | 1 | 0 | |a ANION EXCHANGE RESIN |
| 690 | 1 | 0 | |a CHLORIDE |
| 690 | 1 | 0 | |a DRINKING WATER |
| 690 | 1 | 0 | |a GRAPHITE |
| 690 | 1 | 0 | |a HYDROCHLORIC ACID |
| 690 | 1 | 0 | |a IRIDIUM |
| 690 | 1 | 0 | |a SELENATE |
| 690 | 1 | 0 | |a SELENITE |
| 690 | 1 | 0 | |a TAP WATER |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a ATOMIC ABSORPTION SPECTROMETRY |
| 690 | 1 | 0 | |a AUTOANALYSIS |
| 690 | 1 | 0 | |a CHEMICAL MODIFICATION |
| 690 | 1 | 0 | |a ELECTROCHEMICAL ANALYSIS |
| 690 | 1 | 0 | |a ELUTION |
| 690 | 1 | 0 | |a FLOW INJECTION ANALYSIS |
| 690 | 1 | 0 | |a FLOW RATE |
| 690 | 1 | 0 | |a FURNACE |
| 690 | 1 | 0 | |a ONLINE ANALYSIS |
| 690 | 1 | 0 | |a PRIORITY JOURNAL |
| 690 | 1 | 0 | |a ROBOTICS |
| 690 | 1 | 0 | |a WATER FLOW |
| 690 | 1 | 0 | |a WATER SAMPLING |
| 700 | 1 | |a Pedro, J. | |
| 700 | 1 | |a Bonivardi, A. | |
| 700 | 1 | |a Tudino, M. | |
| 773 | 0 | |d Elsevier, 2004 |g v. 502 |h pp. 99-105 |k n. 1 |p Anal. Chim. Acta |x 00032670 |w (AR-BaUEN)CENRE-133 |t Analytica Chimica Acta | |
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| 856 | 4 | 0 | |u https://doi.org/10.1016/j.aca.2003.09.022 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_00032670_v502_n1_p99_Stripeikis |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032670_v502_n1_p99_Stripeikis |y Registro en la Biblioteca Digital |
| 961 | |a paper_00032670_v502_n1_p99_Stripeikis |b paper |c PE | ||
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| 999 | |c 82266 | ||