ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 45, (1) 31 - 34 (2001)


SURFACE TREATMENT OF LEAD GLASSES FOR REDUCING THE LEACHING OF LEAD
 
Rybaříková Ludmila 1, Dvorská Libuše 1, Hradecká Helena 1, Jiříček Petr 2
 
1 Department of Glass and Ceramics, Institute of Chemical Technology, Technická 5, 166 28 Prague
2 Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická 10, 162 53 Prague

Lead crystal glass was studied in order to establish the effect of preliminary treating the surface on concentration profiles of lead in the surface and on lead leaching into acetic acid solutions. The surface was treated in two ways: 1) by exposure in solutions of acids (acetic acid, hydrochloric acid), 2) exposing the surface to decomposition products of ammonium chloride at the elevated temperature. Both treatments resulted in reducing the leaching of lead from the surface while the effect of decomposition products of ammonium chloride was more efficient. The latter treatment also succeeded in extracting lead from deeper layers of glass.


PDF (0.1 MB)
 
Licence Creative Commons © 2015 - 2021
Institute of Rock Structure and Mechanics of the CAS & University of Chemistry and Technology, Prague
Webmaster | Journal Contact