SciELO - Scientific Electronic Library Online

 
vol.46 issue2INFLUENCE OF THE REACTION CONDITIONS ON THE REDUCTION OF NITROBENZENE CATALIZED BY POLY (4-VINYLPYRIDINE) ANCHORED [RH(COD)(2-PIC)2](PF6) COMPLEXMONOESTERIFICATION OF STYRENE-MALEIC ANHYDRIDE COPOLYMERS WITH ALIPHATIC ALCOHOLS author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Boletín de la Sociedad Chilena de Química

Print version ISSN 0366-1644

Abstract

SANTANDER, P.; NUNEZ-VERGARA, L.J.; STURM, J.C.  and  SQUELLA, J.A.. VOLTAMMETRIC DETERMINATION OF MELATONIN AND PYRIDOXINE (VITAMIN B6) IN TABLETS. Bol. Soc. Chil. Quím. [online]. 2001, vol.46, n.2, pp.131-136. ISSN 0366-1644.  http://dx.doi.org/10.4067/S0366-16442001000200005.

Melatonin and Vitamin B6 can be oxidized at the glassy carbon electrode showing well-resolved anodic peaks by differential pulse voltammetry. Vitamin B6 shows an oxidation peak potential of about 650 mV vs Ag/AgCl in ammonia buffer pH 9 and the peak of melatonin shows an peak potential of 840 mV vs Ag/AgCl in Britton-Robinson buffer pH 2. Both peaks show a linear relation with concentration and consequently are useful for quantification.

Keywords : Melatonin; Pyridoxine; Voltametric determination; Vitamin B6.

        · abstract in Spanish     · text in Spanish

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License