Anodic Stripping Voltammetry of Tin at the Bismuth Film Electrode Using Cetyltrimethylammonium Bromide

✍ Scribed by Chad Prior

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 197 KB
• Volume: 22
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.200970004

✦ Synopsis

Abstract

A sensitive anodic stripping voltammetric procedure at the bismuth film electrode (BiFE) is presented for analysis of Sn(IV) in the presence of Pb(II). For the first time Sn(IV) and Pb(II) signals are resolved at the BiFE allowing quantification of Sn(IV) in the absence and presence of Pb(II) and in simultaneous determination of both trace metals. The optimised oxalic acid – CTAB method produced a detection limit for Sn(IV) of 1.9 μg L^−1^ (S/N=3) and generated linear calibration data (minimum R^2^ of 0.991) between 25–250 μg L^−1^ and 5–50 μg L^−1^ with deposition times of 45 s and 120 s respectively. A 25 μg L^−1^ Sn(IV) signal was clearly resolved in the presence of a 20 fold excess of Pb(II) and the successful determination of tin in the presence of lead was performed in a fruit juice matrix.