Abstract
In recent years nuclear magnetic resonance (NMR) sensors have been increasingly applied to investigate, characterize and monitor objects of cultural heritage interest. NMR is not confined to a few specific applications, but rather its use can be successfully extended to a wide number of different cultural heritage issues. A breakthrough has surely been the recent development of portable NMR sensors which can be applied in situ for non-destructive and non-invasive investigations. In this paper three studies illustrating the potential of NMR sensors in this field of research are reported.
Highlights
Laboratorio di Risonanza Magnetica “Annalaura Segre”, Istituto di Metodologie Chimiche, CNR Area della Ricerca di Roma 1, Via Salaria Km 29,300, 00015 Monterotondo (Rome), Italy; Tel.: +39-06-906-72-700; Fax: +39-06-906-72-519
Results obtained by 13C-CPMAS nuclear magnetic resonance (NMR) spectroscopy allowed the identification of the wood of the icon as a hardwood, indicated a loss of lignin component in the investigated region, and the occurrence of chemical rearrangements in lignin structure caused by degradation
The three cases reported, though not exhaustive, demonstrate that NMR applications can be successfully extended to different issues regarding cultural heritage
Summary
Nuclear magnetic resonance (NMR) is a powerful tool in many fields and a diversity of NMR measurements and methodologies have been and are currently being exploited. A further development of unilateral NMR devices are sensors that can scan depths up to 2.5 cm, producing depth profiles with micrometric spatial resolution [26] These devices generate an inhomogeneous magnetic field with a uniform gradient to resolve the near surface structure of arbitrarily large samples. Application of these devices has opened a number of new possibilities in the field of cultural heritage [27,28,29,30,31,32,33,34]. In the following we report three cases illustrating the potential of NMR sensors in cultural heritage
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