SciELO - Scientific Electronic Library Online

 
vol.51 número3STUDY OF POLYPYRROLE FILMS MODIFIED WITH COPPER AND SILVER MICROPARTICLES BY ELECTROCHEMICAL CEMENTATION PROCESSTHE PREPARATION OF OXYGENATED DERIVATIVES OF AMBROX AND ISOAMBROX FROM DRIMENOL índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Journal of the Chilean Chemical Society

versión On-line ISSN 0717-9707

Resumen

LAZO, A. R. et al. J. Chil. Chem. Soc. [online]. 2006, vol.51, n.3, pp. 975-978. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072006000300010.

Cadmium (II) electrode based on plasticized PVC membranes with 1-furoyl-3,3-diethyl thiourea as ionophore and tributylphosphate as plasticizer has been developed. The membrane was applied on a support of conducting epoxy resin. Some parameters of evaluation of the electrode are presented in this work. The constructed electrode showed linear response in the concentration range of 10-6 -10-3 mol/dm3, had a slope of 28.5 mV/decade, a detection limit (DL) of 2.10-6 mol/dm3 and a lower limit of lineal range (LLLR) of 4.2.10-6 mol/dm3. The static response time obtained was less than 20 seconds. The Cd/S relationship in the membrane was 1:1, as was determined by chemical microanalysis of energy dispersive X-ray spectroscopy (EDS). The constructed electrodes had a life-time of 5 days

Palabras llave : Cadmium (II) electrode; 1-furoyl-3,3-diethyl thiourea; ionophore.

        · texto en Inglés     · pdf en Inglés