Evaluation of ATR-FTIR spectroscopy for distinguish anthropogenic and geogenic calcite.

Abstract Infrared spectroscopy allows to reliably distinguish between calcites formed by different processes, e.g. geogenic and anthropogenic calcite. This approach can be used for rapid sample analysis in the radiocarbon dating of mortars. The datable component is represented calcite, that results from reaction calcium hydroxide with atmospheric CO 2 during hardening material. However, possible sources contamination alter true concentration thus make mortar appearing either older or younger. preventive identification origin calcite present measure only reducing time cost Accelerator Mass Spectrometer (AMS) measurements. Many papers are literature discussing use Fourier transform infrared spectrometry (FTIR) KBr pellet method, In this paper, attenuated total reflectance mode (ATR-FTIR) evaluated since it may valuable advantages such as non-destructivity, perspective reuse dating.