Comparison method of calcium analysis on filter layer water from Borobudur temple using automatic titration and atomic absorption spectrophotometer

Abstract

Comparison method for examination of calcium contents on filter layer water of Borobudur Temple using titrimetric and spectrophotometric methods have been done. The analysis of calcium content by the titrimetric method is using automatic titration with potentiometric principle while by spectrophotometry is using atomic absorption spectrophotometer based on a process of radiation energy absorption by atoms that are at the base energy level (ground state). The sample of filter layer water was collected from four locations on the 3rd floor of Borobudur Temple. The results revealed that average obtained concentration using automatic titration consecutively U3H=15.472 mg/L, S3H=19.494 mg/L, B3C=22.278 mg/L and T3C=17.94 mg/L. Meanwhile the concentration of calcium by atomic absorption spectrophotometry were U3H=13.502 mg/L, S3H=17.782 mg/L, B3C=15.18 mg/L and T3C=16.14 mg/L. The statistic test for comparing the two methods showed the value of t-measured< t-table and p-value (Sig)> 0.01, meaning that both methods did not significantly differences in calcium analysis.