Determination of Dissolved Zn(II) and Cd(II) in Estuarine Water by Using a Bismuth Film Microelectrode

作者：de Souza Ana P R; Salles Maiara O; Braga Elisabete S; Bertotti Mauro^*

来源：Electroanalysis, 2011, 23(11): 2511-2515.

DOI：10.1002/elan.201100093

• Bismuth film
• Microelectrode
• Cadmium
• Zinc
• Stripping analysis
• Estuarine water

A bismuth-film electrode was employed to quantify Cd(II) and Zn(II) in estuarine water samples by anodic stripping voltammetry. The bismuth film was deposited in situ simultaneously with the analytes onto a carbon fibre disc microelectrode (radius = 3 mu m). Under the optimised conditions, calibration plots for both metallic ions were obtained in the range from 0.5 to 10.0 nmol L(-1) and the limits of detection for Cd(II) and Zn(II) were estimated as 0.03 and 0.8 nmol L(-1), respectively. The accuracy of the results supplied by the bismuth film microelectrode (BiFME) was assessed by performing addition-recovery experiments and by comparing values with those obtained with a certified sample. The usefulness of the methodology was demonstrated by applying the BiFME to measuring the Cd(II) and Zn(II) content in estuarine water.

• 出版日期2011-11