Comparison of Total Inorganic Carbon (TIC) Analysis with Titration Method Analysis in Determining Carbon Dioxide (CO2) Content of Amine Solvent

Abstract

Total Inorganic Carbon (TIC) is an analysis method to determine carbon content in a sample. In this paper, applicability of TIC method to determine carbon dioxide (CO2) content in amine solvent is explored in detailed. Both commercial and self-blended amine solutions, consisting of MDEA and PZ, were used in this study and bubbled with CO2. TIC method was calibrated for both mid-level mode and high level mode. Difference in results were found when comparing TIC against the standard titration method; this is largely due to error in titration method during the methanol pH adjustment step. TIC method is considered to be better in terms of limit of detection, limit of quantification, recovery percentage, and susceptibility to error.