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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > February  >
In the Laboratory
Adsorptive Stripping Voltammetry of Environmental Indicators: Determination of Zinc in Algae
C. Collado-Sánchez, J. J. Hernández-Brito, J. Pérez-Peña, Ma. E. Torres-Padrón, and Ma. D. Gelado-Caballero
Departamento de Química, Facultad de Ciencias del Mar, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
Cover
February 2005
Vol. 82 No. 2
p. 271
Abstract
The determination of persistent pollutants in the environment at trace concentrations requires techniques with high sensitivity and selectivity, such as electrochemical methods. This article describes the use of adsorptive stripping voltammetry for the determination of zinc in algae. It also describes the digestion procedure of the sample by means of an acid mixture with the aid of microwaves. This method allows students to use a standard experimental protocol together with the clean conditions required to measure trace metals. The experiment is appropriate for students involved in analytical techniques or in environmental chemistry courses.
Supplement
Instructions for the students and notes for the instructor are available.
*  Contents JCE2005p0271W.doc (Microsoft Word)
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*  Citation
 Collado-Sánchez, C.; Hernández-Brito, J. J.; Pérez-Peña, J.; Torres-Padrón, Ma. E; Gelado-Caballero, Ma. D. J. Chem. Educ. 2005 82 271.
*  Keywords
 Analytical Chemistry; Electrochemistry; Environmental Chemistry; Laboratory Instruction; Metals; Quantitative Analysis
*  History
 Created:
Last Updated:		 January 4, 2005
January 14, 2005
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