Oral or Poster

IACS

JCM04 - Recent Advances in Ice Core Science

Multi-parameter ice core analysis using the enhanced CFA System of KOPRI

This study presents an advanced Continuous Flow Analysis (CFA) system developed by the Korea Polar Research Institute (KOPRI) for ice core analysis. Building upon existing CFA platforms, our system integrates state-of-the-art analytical modules to enable the simultaneous, continuous measurement of multiple chemical and isotopic parameters with enhanced precision and reliability. Water isotopes (????O, ??D) are analyzed using a CWS (Continuous Water Sampler)-CRDS system utilizing porous membrane diffusion for continuous flow measurement. In addition, the system measures conductivity to monitor ionic strength. Calcium ions, ammonium, and hydrogen peroxide are quantified using fluorometry, providing rapid and sensitive assessments of these analytes. A conventional laser particle counter is used to analyze insoluble particles in terms of size distribution, while an additional imaging module further enhances particle characterization by providing detailed morphological analysis. Trace elements are determined using ICP-SF-MS (Inductively Coupled Plasma Sector Field Mass Spectrometry), enabling simultaneous multi-element analysis at parts-per-trillion levels. The total organic carbon concentration is also measured.?This system is set to be applied to a newly collected ice core from the Canisteo Peninsula in West Antarctica as part of the RAICA (Ross-Amundsen Ice Core Array) project of KOPRI. Due to the high accumulation rate in this region, the core is expected to provide high temporal resolution, likely minimizing the impact of sample mixing and memory effects and further enhancing the reliability of the CFA-derived climate and environmental records.