Portable, low-cost carbon dioxide isotope analyzer for field-based earth science applications

点击翻译按钮获取中文摘要

Recent advances in Cavity Ring-Down Spectroscopy (CRDS) have produced a robust, field-portable (<30 kg) instrument that is one-tenth the cost of a typical IRMS, yet produces 13C/12C measurements that are just as precise. Because of their low cost, field readiness, ease of operation, and ability to make measurements in real time at fine temporal resolution, these instruments are poised to cause a revolutionary advance in isotope science. This RTI proposal requests funds for a field-portable CRDS system. The analytical engine of the system will be a Cavity Ring-Down Spectrometer designed to measure 13C/12C values in CO2 gas and equipped with a multi-use inlet manifold. Our goal is to make the maximum scientific impact with this remarkable device. We will achieve this objective in three ways. (1) The instrument will be used 24/7 for 365 days each year. (2) The user group is highly experienced, with each individual having large groups of postdocs, graduate students, and undergraduates. (3) Our applications are deliberately diverse, ranging from solid earth problems, through environmental and climate changes issues, to astrobiology and early Earth challenges. This instrument will have a major impact on our respective research programs.