OBJECTIVE: To evaluate traditional acidic curing as a preventive method for reducing lead content of glazed ceramic ware. MATERIAL AND METHODS: In 27 ceramic ware pieces from four states in Mexico, the level of residual lead was determined through atomic absorption spectrophotometry after four washings with acetic acid 3%. RESULTS: The lead content of the vinegar washing diminished proportionally with the number of washings, although it remained highly above the permissible levels of this metal (2.5-7.0 p.p.m.). CONCLUSIONS: Traditional acidic curing of glazed ceramic ware is not a useful preventive measure for reducing lead exposure.
OBJECTIVE: To evaluate traditional acidic curing as a preventive method for reducing lead content of glazed ceramic ware. MATERIAL AND METHODS: In 27 ceramic ware pieces from four states in Mexico, the level of residual lead was determined through atomic absorption spectrophotometry after four washings with acetic acid 3%. RESULTS: The lead content of the vinegar washing diminished proportionally with the number of washings, although it remained highly above the permissible levels of this metal (2.5-7.0 p.p.m.). CONCLUSIONS: Traditional acidic curing of glazed ceramic ware is not a useful preventive measure for reducing lead exposure.
Authors: Ana M Valles-Medina; Angel I Osuna-Leal; Maria Elena Martinez-Cervantes; Maria Carmen Castillo-Fregoso; Martha Vazquez-Erlbeck; Alfonso Rodriguez-Lainz Journal: Int Sch Res Notices Date: 2014-10-29