Determinación de trazas de Molibdeno (VI), Níquel (II) y Vanadio (V) en cementos por polarografía diferencial de impulsos

Antonio Cobo-Guzmán; Rafael Gallego-Andreu; Demetrio Gaspar-Tebar

doi:10.3989/mc.1985.v35.i199.915

Determinación de trazas de Molibdeno (VI), Níquel (II) y Vanadio (V) en cementos por polarografía diferencial de impulsos

Authors

Antonio Cobo-Guzmán Departamento de Química Analítica del CSIC; Facultad de Ciencias Químicas de la Universidad Complutense de Madrid
Rafael Gallego-Andreu Departamento de Química Analítica del CSIC; Facultad de Ciencias Químicas de la Universidad Complutense de Madrid
Demetrio Gaspar-Tebar ICCET/CSIC

DOI:

https://doi.org/10.3989/mc.1985.v35.i199.915

Abstract

In this work an account is given of the results obtained when the differential pulse polarography (differential pulse anodic stripping voltametry) is applied to the determination of the contents of the compounds by molybdenum (VI), nickel (II) and vanadium (V) in a common portland cement which are in quantities of the order of p.p.m. Those studies show that it is not possible to determine simultaneaously the content of the three mentioned ions in the cement, but if working in acid medium (hydrochloridric and sulphuric), in ammoniacal or cyanided medium and in basic medium (produced by NaHCO₃) polagrogrammes are obtained which allow to complete those mentioned determinations of Mo (VI) in the first medium, of Ni (II) in the second and of V(V) in the third. Because of the high sensibility of the polarography it is possible to determine the Ni (II) which is found in quantities from 2.9 to 3.4 p.p.m. (0.0002_g to 0.0003₄ %, in mass).

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Published

1985-09-30

How to Cite

Cobo-Guzmán, A., Gallego-Andreu, R., & Gaspar-Tebar, D. (1985). Determinación de trazas de Molibdeno (VI), Níquel (II) y Vanadio (V) en cementos por polarografía diferencial de impulsos. Materiales De Construcción, 35(199), 27–38. https://doi.org/10.3989/mc.1985.v35.i199.915

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Issue

Vol. 35 No. 199 (1985)

Section

Research Articles

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