Pulsed Terahertz Radiation for Sensitive Quantification of Carbonate Minerals.

ABSTRACT: Quantification of natural carbonate minerals, namely, aragonite, high- and low-Mg calcite, and dolomite provides essential information about biomineralization, carbon cycling on Earth, and the evolution of ocean chemistry, and is also useful in many other scientific, pharmaceutical, and industrial fields. However, X-ray diffractometer has previously been the only practical tool to identify and quantify carbonate minerals, including calcium carbonate (CaCO₃) polymorphs. We propose new fingerprint terahertz (THz) absorption and reflective index spectra in the 1-6 THz range that probe the lattice phonon modes and can be used for sensitive quantification of these four carbonate minerals, including polymorphs. In THz time-domain spectroscopy with our unique attenuated total reflectio

SUBMITTER: Sakai S 

PROVIDER: S-EPMC6648234 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature