Protective Green Patinas on Copper in Outdoor Constructions
Yolanda Hedberg, Inger Odnevall Wallinder
DOI: 10.4236/jep.2011.27109   PDF    HTML     5,646 Downloads   9,203 Views   Citations


The last 15 years of research related to atmospheric corrosion and the release of copper to the environment are shortly summarized. Brown and green patinas with high barrier properties for corrosion are gradually evolved on copper at atmospheric conditions. The corrosion process and repeated dry and wet cycles results in a partial dissolution of corrosion products within the patina. Dissolved copper can be released and dispersed into the environment via the action of rainwater, however the major part is rearranged within the patina during drying cycles. The majority of corrosion products formed have a poor solubility, very different from water soluble copper salts. The release process is very slow and takes place independent of patina color. Its extent has only a marginal effect on the adherent patina. Released copper rapidly interacts with organic matter and in contact with different surfaces already in the close vicinity of the building, such as drainage systems, storm water pipes, pavements, stone materials and soil systems. These surfaces all have high capacities to retain copper in the runoff water and to reduce its concentration and chemical form to non-available and non-toxic levels for aquatic organisms.

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Y. Hedberg and I. Wallinder, "Protective Green Patinas on Copper in Outdoor Constructions," Journal of Environmental Protection, Vol. 2 No. 7, 2011, pp. 956-959. doi: 10.4236/jep.2011.27109.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] I. Odnevall Wallinder, Y. Hedberg and P. Dromberg, “Storm Water Runoff Measurements of Copper from a Naturally Patinated Roof and from a Parking Space. Aspects on Environmental Fate And Chemical Speciation,” Water Research, Vol. 43, No. 20, 2009, pp. 5031-5038. doi:10.1016/j.watres.2009.08.025
[2] B. Bahar, G. Herting, I. Odnevall Wallinder, K. Hakkila, C. Leygraf and B. Virta, “The Interaction between Concrete Pavement and Corrosion-Induced Copper Runoff from Buildings,” Environmental Monitoring and Assessment, Vol. 140, No. 1-3, 2008, pp. 175-189. doi:10.1007/s10661-007-9858-0
[3] I. Odnevall Wallinder, B. Bahar, C. Leygraf and J. Tidblad, “Modelling and Mapping of Copper Runoff for Europe,” Journal of Environmental Monitoring, Vol. 9, 2007, pp. 66-73. doi:10.1039/b612041e
[4] S. Bertling, I. Odnevall Wallinder, D. Berggren and C. Leygraf, “Long Term Corrosion-Induced Copper Runoff from Natural and Artificial Patina and Its Environmental Fate,” Environmental Toxicology and Chemistry, Vol. 25, No. 3, 2006, pp. 891-898. doi:10.1897/05-027R.1
[5] S. Bertling, F. Degryse, I. Odnevall Wallinder, E. Smolders and C. Leygraf, “Model Studies of Corrosion-Induced Copper Runoff Fate in Soil,” Environmental Toxicology and Chemistry, Vol. 25, No. 3, 2006, pp. 683-691.
[6] A. Kr?tschmer, I. Odnevall Wallinder and C. Leygraf, “The Evolution of Outdoor Copper Patina,” Corrosion Science, Vol. 44, No. 3, 2002, pp. 425-450.
[7] C. Karlén, I. Odnevall Wallinder, D. Heijerick and C. Leygraf, “Runoff Rates, Chemical Speciation and Bioavailability of Copper Dispersion from Naturally Patinated Copper Roofs,” Environmental Pollution, Vol. 120, No. 3, 2002, pp. 691-700.
[8] W. He, I. Odnevall Wallinder and C. Leygraf, “A Comparison between Corrosion Rates and Runoff Rates from New and Aged Copper and Zinc as Roofing Materials,” Water, Air and Soil pollution: Focus, Vol. 1, 2001, pp. 67-82.

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