Determination Of Oxygen Isotope Ratio (18O-/16O) and Sulfur (34S-/32S) Value Of BaSO4 Din 5033 For Internal Standard

It has been done an experiment to determine of oxygen(18O-/16O) and Sulfur (34S-/32S) ) isotop value of BaSO4 DIN 5033 (merck) for internal standard. The used technique for preparation of CO2 gas to measure oxygen isotop ratio ratio (stated as deltaδ 18O) is based on Rafter on Rafte method using graphite for reduction of BaSO4. Where the used technique for preparation of SO2 gas to measure isotope sulphur ratio (started as δ 34S) is based on Robinson - Kasakabe method using Cupro oxide to oxidize Ag2S. The result of this experiment is 11,48±0,41 0/00 and 5,00 plus minus ±0,33 o/oo for deltaδ 18O and δ 34S value respectively. Based on this experiment. BaSO4 DIN 5033 can be used as internal standard because is values both oxygen and sulphur lie in the middle of range of its variation in nature. The result of interlab comparison shows that the value of this experiment is nearly similar to the value obtained from laboratorium of Pinstech-Pakistan. To acquire the result, it is necessary to carry out more interlab comparison