Development of a Quantum-Cascade Laser Absorption Spectrometer for Rapid and Precise Measurement of 13C-18O and 18O-18O Clumping in CO2

Abstract

Kinetic effects bias paleotemperature signals preserved in carbonate 13C-18O clumping. Measurements of 18O-18O clumping can resolve these biases. We present a prototype laser spectrometer that simultaneously measures 13C-18O and 18O-18O clumping to precisions of <0.25‰.