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 ...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.展开更多
文摘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.
