A New and Facile Strategy for Determination of Lead and Cadmium Using Silver Electrodes Manufactured from Digital Versatile Discs

• Published in: Chemical research in Chinese universities 2017-10, Vol.33 (5), p.799-803
• Main Authors: Cui, Wenyu, Fan, Lishuang, Geng, Lin, An, Maozhong, Zhang, Fujun
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Anodic stripping; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Deoxygenation; Drinking water; Electrodes; Inorganic Chemistry; Lead; Optical disks; Organic Chemistry; Pb2; Physical Chemistry; Selectivity; Silver; Stripping; Voltammetry; 光盘制作; 多功能; 数字多用光盘; 方波伏安; 沉积时间; 银电极; 阳极溶出伏安法
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-017-7010-4

The use of a digital versatile disc（DVD）-based Ag electrode for the square-wave anodic stripping voltammetric determination of Pb2＋ and Cd2＋ was described. The effect of I- on the stripping analysis of Pb2＋ and Cd2＋ at Ag electrodes was first studied. F significantly improved the stripping peaks of both Pb2＋ and Cd2＋. The square-wave voltammetric stripping response was linear over 5-50 μg/L for Pb2＋ and Cd2＋ with a deposition time of 118 s. The detection limits were 0.2 and 2.6 μg/L for Pb2＋ and Cd2＋, respectively. The high sensitivity, selectivity, and stability of this DVD-based Ag electrode enabled its practical application for simple, rapid and economical determination of trace levels of Cd2＋ and Pb2＋ in tap water samples. In addition, detection can be achieved without sample deoxygenation and the electrode can be easily manufactured.