6533b7defe1ef96bd1276802

RESEARCH PRODUCT

Dating archeological lead artifacts from measurement of the corrosion content using the voltammetry of microparticles.

María Teresa Doménech-carbóMaría Amparo Peiró-rondaAntonio Doménech-carbó

subject

ChemistryElectrodeOxideMineralogyPBO2ArchaeologyAnalytical ChemistryCorrosionSulfuric-acid-solutionBatteriesLead (geology)Electrochemical oxidationAge estimationForce microscopyPINTURACalibrationVoltammetryReduction

description

A methodology for dating archeological lead artifacts based on the voltammetry of microparticles is described. This methodology is based on the comparison of the height of speci¿c voltammetric features from PbO2 and PbO corrosion products formed under long-term alteration conditions. Calibration of the method was performed with the help of a series of well-documented lead pieces from the funds of di¿erent museums of the Comunitat Valenciana (Spain) covering from the ¿fth century B.C. to present day. The variation of peak currents with the time of corrosion can be¿tted to the same potential rate law as that found by Reich (R = 0.070 ( 0.005), using measurements on the Meissner fraction in the superconducting state of lead. The proposed electrochemical methodology enables the dating of archeological lead artifacts with a time-dependent uncertainty estimated to be (150 years for the most ancient samples in this study

yearjournalcountryeditionlanguage
2011-06-15Analytical chemistry
10.1021/ac200731qhttps://pubmed.ncbi.nlm.nih.gov/21604737