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Simultaneous determination of Pb and Cd in low-cost jewelry using differential pulse voltammetry

Author:
Ferreira, Taimara Polidoro, de Sousa, Rafael Arromba, Lowinsohn, Denise
Source:
Analytical methods 2016 v.8 no.45 pp. 8028-8032
ISSN:
1759-9679
Subject:
analytical methods, cadmium, electrochemistry, lead, police, trade
Abstract:
The simultaneous electrochemical determination of lead (Pb) and cadmium (Cd) in low-cost jewelry was achieved using differential pulse voltammetry (DPV). The presented voltammetric detection via standard addition shows possible simultaneous analyses of Cd and Pb. The detection limit of 1.13 × 10⁻⁴% m m⁻¹ for lead and 1 × 10⁻³% m m⁻¹ for cadmium were obtained. The recovery rate ranged between 99 and 110% for Cd and 99–105% for Pb. Nine different low-cost jewelry pieces were analysed. Some were purchased from local trade while others were confiscated goods from the police force.
Agid:
6384347