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STUDIES OF CHEMICAL CLEANING ON HISTORICAL LEAD

1 STRACHOTOVÁ Kristýna Charlotte
Co-authors:
1 KOUŘIL Milan 1 ŠVADLENA Jan 1 MSALLAMOVÁ Šárka
Institution:
1 University of Chemistry and Technology, Prague, Department of Metals and Corrosion Engineering, Prague, Czech Republic, EU, strachok@vscht.cz
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1492-1497
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2019.949
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
441 views / 278 downloads
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Abstract

This study has been focused on the evaluation and comparison of the chemical treatments applied (aqueous solutions of CH3COOH (1 %), CH3COONH4 (5/25 %), EDTA (3/5 %), HCl (5/10 %) and ion exchange resin) or possible applicable (H2SO4, Na3PO4·12H2O or KNaC4H4O6·4H2O) to the heritage of lead stored in museums. The evaluation of the different solutions used for chemical treatment on lead samples is based on lead surface changes (colour, morphology, chemical composition) observation and on the impact of the chemical treatments (mass loss and cleaning efficiency). Examination of the lead samples before and after different chemical treatments showed that each of used solutions induced any chemical and/ or physical changes.

Keywords: lead, chemical cleaning, chemical treatment, pickling, passivity

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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