Corroding Copper in the Laboratory

Carvalho, Luciana da Costa

doi:10.1007/978-3-030-97892-1_2

Cited by 1 publication

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“…Indeed, corrosion experiments have demonstrated that copper ions readily react with organic and inorganic ligands in the same medium 31 forming copper-organic complexes and characteristic inorganic phases. Moreover, the low solubility of copper-organic complexes in organic solvents 32 and/or the presence of copper ions negatively impact the recovery of organic residues by typical gas chromatography with mass spectrometry protocols 33 .…”

Section: Introductionmentioning

confidence: 99%

Unlocking the organic residues preserved in the corrosion from the Pewsey Hoard vessels

Carvalho

Henry

McCullagh

et al. 2022

Sci Rep

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The characterization of archaeological metal corrosion has traditionally been limited to the identification of inorganic compounds usually by X-ray diffraction (XRD), thought to result from the interaction between the metal object and the deposition environment. The discovery of a hoard of Late Roman copper-alloy vessels in Wiltshire, UK presented an unique opportunity to adopt a multi-analytical approach to characterize corrosion combining XRD with Fourier-transform infrared (FTIR) and gas chromatography with quadrupole time-of-flight mass spectrometry using a thermal separation probe (GC-QTOF-MS with TSP). This approach revealed organic compounds potentially historical preserved within crystalline inorganic matrices. It has been known for some time that ceramics can harbour organic residues, which provide crucial evidence about the use of these vessels in the past. Our results confirms that similar residues appear to survive in metal corrosion thus extending the potential for identification of biomaterials used in the past.

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Section: Introductionmentioning

confidence: 99%