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Plant and Soil

, Volume 43, Issue 1–3, pp 211–217 | Cite as

Research on the presence of sulphurcycle bacteria in the stone of some historical buildings in Florence

  • P. Tiano
  • R. Bianchi
  • G. Gargani
  • S. Vannucci
Article

Summary

The problem of the conservation of ancient buildings is often the conservation of stone. The decayed stone is exfoliated and contains in general a relatively high quantity of gypsum.

Fifty samples of deteriorated stones from buildings of the historic center of Florence were collected and examined. The gypsum percentage in the samples, determined by diffractometric analysis, varied between 0.5 and 10 per cent. The sulphur bacteria were in the range from 250 to 20,000 per g of stone. In spite of certain indications it is not possible to establish a direct correlation between gypsum content and number of sulphur bacteria.

Keywords

Sulphur Plant Physiology Gypsum Historical Building Historic Center 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Martinus Nijhoff 1975

Authors and Affiliations

  • P. Tiano
    • 1
    • 2
  • R. Bianchi
    • 1
    • 2
  • G. Gargani
    • 1
    • 2
  • S. Vannucci
    • 3
  1. 1.C.N.R. — Centro di studio sulle cause di deperimento e metodi di conservazione delle opere d'arteFirenze
  2. 2.Istituto di Microbiologia — Università di FirenzeItaly
  3. 3.Instituto di Mineralogia — Università di FirenzeItaly

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