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A. V. Garmay, K. V. Oskolok, O. V. Monogarova
μXRF analysis of XVIII century copper
coin: patina investigation and “bronze disease” detection
Abstract
Several types of patina can be formed on
copper and copper-containing artefacts during ageing. These patinas prevent
further destruction and, besides, can provide information about the environment
conditions,under
which these artefacts have been stored. In contrast, chloride corrosion is
harmful for copper and bronze objects and can lead to their complete
destruction. Therefore, it should be detected and prevented as early as
possible. In this work, a copper coin produced in the Russian Empire in the XVIII
century was investigated using micro X-ray fluorescence spectrometry. It proved
to be an effective tool for the patina and contamination analysis and chloride
corrosion detection.
Key words: micro X-ray fluorescence,
archaeology, corrosion, bronze disease.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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