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Artículo

Determination of vanadium (V) in drinking water by flow injection and pre-concentration in a knotted reactor by inductively coupled plasma optical emission spectrometry with ultrasonic nebulization

Wuilloud, Rodolfo GermanIcon ; Salonia, José Antonio; Olsina, Roberto AntonioIcon ; Martinez, Luis DanteIcon
Fecha de publicación: 06/2000
Editorial: Pergamon-Elsevier Science Ltd
Revista: Spectrochimica Acta Part B: Atomic Spectroscopy
ISSN: 0584-8547
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Química Analítica

Resumen

An on-line vanadium pre-concentration and determination system implemented with inductively coupled plasma optical emission spectroscopy (ICP-OES) associated with a flow injection (FI) method with ultrasonic nebulization (USN) system was studied. The vanadium was retained as vanadium-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol V(V)-(5-Br-PADAP) complex, at pH 3.2. The vanadium complex was removed from the knotted reactor (KR) with 30% v/v nitric acid. A sensitivity enhancement factor of 180 was obtained with respect to ICP-OES using pneumatic nebulization (15 for USN and 12 for KR). The value of detection limit for the pre-concentration of 10 ml of aqueous solution was 19 ng l-1. The precision for 10 replicate determinations at the 5 μg 1-1 V(V) level was 2.6% relative standard deviation (R.S.D.), calculated with the peak heights obtained. The calculation graph using the pre-concentration system for vanadium was linear with a correlation coefficient of 0.9995 at levels near the detection limits up to at least 100 μg l-1. The method was successfully applied to the determination of vanadium in drinking water samples.
Palabras clave: Vanadium determination , Drinking water , Inductively coupled plasma optical emission spectrometry , Ultrasonic nebulization , Knotted reactor2-(5-bromo-2-pyridylazo)-5-diethylaminophenol reagent
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/100712
URL: https://www.sciencedirect.com/science/article/abs/pii/S0584854700002159
DOI: http://dx.doi.org/10.1016/S0584-8547(00)00215-9
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Articulos(INQUISAL)
Articulos de INST. DE QUIMICA DE SAN LUIS
Citación
Wuilloud, Rodolfo German; Salonia, José Antonio; Olsina, Roberto Antonio; Martinez, Luis Dante; Determination of vanadium (V) in drinking water by flow injection and pre-concentration in a knotted reactor by inductively coupled plasma optical emission spectrometry with ultrasonic nebulization; Pergamon-Elsevier Science Ltd; Spectrochimica Acta Part B: Atomic Spectroscopy; 55; 6; 6-2000; 671-680
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