COMPARISON OF TWO BACKGROUNDS ON 14C ACTIVITY MEASUREMENT WITH LSC (LIQUID SCINTILLATION COUNTING)

Andi Tenrisa’na (Radiation Chemistry Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University)
Alfian Noor (Radiation Chemistry Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University)
Muhammad Zakir (Radiation Chemistry Laboratory, Department of Chemistry, Faculty of Mathematics and Natural Science, Hasanuddin University)

MARINA CHIMICA ACTA
Vol. 19 No. 2 (2018): Volume 19, No. 2 (2018)

Comparison of the two types of background on 14C activity measurement has been carried out. This study aims to determine a better background for 14C activity measurement using the LSC (Liquid Scintillation Counting) method. The background used consists of two, namely background I and background II. Background I is a marble solution that has been absorbed using 30% DEA. Background II is a 30% DEA solution. Activity measurement of 14C was carried out using Hidex 300 SL liquid scintillation counter (LSC). Activity 14C background I is 99,389 DPM. While Activity 14C background II is 101,178 DPM. This shows that the background that is better used for measuring Activity 14C is background I, which is a marble solution that has been absorbed using DEA