Analysis activity 14C of coral in Barrang Caddi Island, Spermonde Archipelago

Abstract

Abstract This study aims to determine carbon-14 activity on coral from Barrang Caddi. Several stages of research were physical and chemical cleaning to eliminate contamination on coral. CO2 absorption pre-treatment method, titration to determine total carbon absorbed in the process of absorption CO2 and enumeration with LSC Hidex 300 SL to determine the optimum time of enumeration, the average value of activity 14C and specific activities 14C. In this study, marble from marble karst, Maros, was used as a background. The results show that the absorption capacity was 0.2188 mol CO2/mol OH, the absorption efficiency of 21.87%, total carbon mass was 0,168 gram, optimum counting time was 15 minutes, average activity 14C was 433,597 DPM, enumeration efficiency was 0,567 and specific activity was 15.262 DPM/gC. It was concluded that coral in Barrang Caddi relatively new.

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