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

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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.

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References

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Authors and Affiliations

  1. C.N.R. — Centro di studio sulle cause di deperimento e metodi di conservazione delle opere d'arte, Firenze

    P. Tiano, R. Bianchi & G. Gargani

  2. Istituto di Microbiologia — Università di Firenze, Italy

    P. Tiano, R. Bianchi & G. Gargani

  3. Instituto di Mineralogia — Università di Firenze, Italy

    S. Vannucci

Authors
  1. P. Tiano
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  2. R. Bianchi
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  3. G. Gargani
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  4. S. Vannucci
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Additional information

Paper read at the Symposium on the Sulphur Cycle, Wageningen, May 1974.

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Tiano, P., Bianchi, R., Gargani, G. et al. Research on the presence of sulphurcycle bacteria in the stone of some historical buildings in Florence. Plant Soil 43, 211–217 (1975). https://doi.org/10.1007/BF01928487

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  • DOI: https://doi.org/10.1007/BF01928487

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