Wilbert Smith Archives Files Box 1131 19 1131-19-p222

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SILVER 8 CONCENTRATION (PARTS PER MILLION) PAINTINGS CAN BE DATED by COPPER 20) 500 MANGANESE ZINC. of 7A 1 ied techs ing the concentration jous trace elements in white lead paint, which has been used. as a primer and white pigment since the Middle Ages. The changes in the used to purify lead. The neutron-activation technique requires less than a milligram of white lead to perform a complete analysis. Graphs are based on data obtained by Jan Houtman and J. Turkstra of the Reactor Instituut at...