INQUISUR 21779
INSTITUTO DE QUIMICA DEL SUR
Unidad Ejecutora - UE
artículos
Título:
A pencil-lead bismuth film electrode and chemometric tools for simultaneous determination of heavy metals in propolis samples
Autor/es:
MARIA SUSANA DI NEZIO; MARCELO F. PISTONESI; GASTÒN D. PIERINI; MARÍA E. CENTURIÓN
Revista:
MICROCHEMICAL JOURNAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Louisiana; Año: 2016 vol. 125 p. 266 - 272
ISSN:
0026-265X
Resumen:
A simultaneous determination of Zn, Cd, Pb and Cu in rawpropolis samples, employing squarewave anodic strippingvoltammetry and chemometric tools, was developed. For this purpose, a pencil-lead bismuth film electrodewas used as a working electrode. In order to optimize the parameters of square wave voltammetry a Box?Behnken design combined with desirability function was used. Different algorithms such Asymmetric LeastSquares (AsLS) and Correlation Optimized Warping (COW) were employed in order to preprocess the rawdata. Partial Least Squares (PLS) and Artificial Neuron Networks (ANN) were used to predict the concentrationof the four metals in the samples. The methodwas tested successfully on raw propolis samples obtained fromdifferentlocalities of the Province of Buenos Aires, Argentina and the results were validated with recovery assays.
