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Abstract:

Selenium was determined in samples with high copper and iron contents by hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES) after flow-injection (FI) on-line copper and iron removal and selenium(VI) reduction. A Dowex 1X-8 anion-exchange microcolumn was used for the separation of selenium from copper and iron as their chloro-complexes. Se(VI) was then reduced on-line by heating a PTFE coiled reactor (150 cm long, 0.7 mm i.d.) in a 100°C water bath. After reduction of Se(VI), a 900-μl sample was injected into the carrier stream containing hydrochloric acid and sodium tetrahydroborate to generate the hydride. A limit of detection of 0.4 μg l-1 (RSD 2.3% for 20 μg l-1 selenium) was obtained. The application of the method to Geochemical Standard Reference Samples and copper metal reference materials (MBH) demonstrated that results were in good statistical accordance with certified values. © 2001 Elsevier Science B.V.

Registro:

Documento: Artículo
Título:On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry
Autor:Stripeikis, J.; Tudino, M.; Troccoli, O.; Wuilloud, R.; Olsina, R.; Martinez, L.
Filiación:Laboratorio de Análisis de Trazas, Departamento de Quı́mica Inorgánica, Analı́tica y Quı́mica Fı́sica, INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Area de Quı́mica Analı́tica, Facultad de Quı́mica, Bioquı́mica y Farmacia, Universidad Nacional de San Luis, P.O. Box 375, San Luis, 5700, Argentina
Consejo Nacional de Investigaciones Cientı́ficas y Técnicas (CONICET), Argentina
Palabras clave:Hydride generation-inductively coupled plasma optical emission spectrometry (HG-ICP-OES); On-line pre-reduction; On-line removal of Cu and Fe interferences; Selenium determination; Copper; Inductively coupled plasma; Iron; Polytetrafluoroethylenes; Spectrometry; Inductively coupled plasma optical emission spectrometry; Selenium
Año:2001
Volumen:56
Número:1
Página de inicio:93
Página de fin:100
DOI: http://dx.doi.org/10.1016/S0584-8547(00)00296-2
Título revista:Spectrochimica Acta - Part B Atomic Spectroscopy
Título revista abreviado:Spectrochim. Acta Part B At. Spectrosc.
ISSN:05848547
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05848547_v56_n1_p93_Stripeikis

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Citas:

---------- APA ----------
Stripeikis, J., Tudino, M., Troccoli, O., Wuilloud, R., Olsina, R. & Martinez, L. (2001) . On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry. Spectrochimica Acta - Part B Atomic Spectroscopy, 56(1), 93-100.
http://dx.doi.org/10.1016/S0584-8547(00)00296-2
---------- CHICAGO ----------
Stripeikis, J., Tudino, M., Troccoli, O., Wuilloud, R., Olsina, R., Martinez, L. "On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry" . Spectrochimica Acta - Part B Atomic Spectroscopy 56, no. 1 (2001) : 93-100.
http://dx.doi.org/10.1016/S0584-8547(00)00296-2
---------- MLA ----------
Stripeikis, J., Tudino, M., Troccoli, O., Wuilloud, R., Olsina, R., Martinez, L. "On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry" . Spectrochimica Acta - Part B Atomic Spectroscopy, vol. 56, no. 1, 2001, pp. 93-100.
http://dx.doi.org/10.1016/S0584-8547(00)00296-2
---------- VANCOUVER ----------
Stripeikis, J., Tudino, M., Troccoli, O., Wuilloud, R., Olsina, R., Martinez, L. On-line copper and iron removal and selenium(VI) pre-reduction for the determination of total selenium by flow-injection hydride generation-inductively coupled plasma optical emission spectrometry. Spectrochim. Acta Part B At. Spectrosc. 2001;56(1):93-100.
http://dx.doi.org/10.1016/S0584-8547(00)00296-2