Investigation of lead transport effect from glazed pottery to liquid medium by EDXRF and ICP-AES methods

Abstract

EDXRF and ICP-AES were applied to investigate the dissolution of lead from the surface layer of glazed pottery vessels into different water media of different acidities. The kinematics of lead release were measured by varying the pH and temperature of the liquid medium. The highest lead content measured in the liquid (0.01 mol l^–1 citric acid solution) was 500 ppm after a 5000 min leaching time. Lead extraction was found to depend on the acid type (citric and tartaric acid), the origin or manufacturer of the pottery, the pH of the liquid and time and temperature of dissolution.

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