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Original Articles

The Determination of Zinc, Cadmium, Lead and Copper in Precipitation by Computerized Differential Pulse Voltammetry

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Pages 85-98 | Received 04 Apr 1984, Published online: 19 Dec 2006
 

Abstract

A method is described for the determination of metals in rainwater by means of differential pulse anodic stripping voltammetry. Organic interferants are removed by passing the sample over active carbon at pH1. A symmetrical, mercury-drop electrode flow through cell is mounted on a PAR 303 electrode stand.

The polarography and the flow injection sample handling system are computer controlled. Results are obtained by means of a calibration graph, standard additions are not necessary. Results for Zn, Cd, Pb and Cu in rainwater are in agreement with results obtained by AAS.

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