Archaeometallurgical characterisation of Donatello's Florentine copper alloy masterpieces using portable laser-induced plasma spectroscopy and traditional techniques

We investigated the execution processes and the composition of a set of well-known Florentine copper alloymasterpieces attributed to Donatello: David, San Ludovico, Pulpito della Resurrezione, Capitello, and AmoreAttis. Portable laser-induced plasma spectroscopy was used in order to detect the main elements in thealloys and achieve exhaustive compositional maps of the first three works, which were executed throughmultiple casting and assembling. The compositions of the others were analysed using traditionaltechniques. The comparison of the results was extended to some celebrated masterpieces by Ghibertiand Brunelleschi, and with the information provided by documentary sources in order to achieve apreliminary picture of the alloys used by Florentine artists during the Early Renaissance.