25℃时CO_2和H_2 O同位素交换反应分离系数的测定

DETERMINATION OF THE SEPARATION FACTOR FOR ISOTOPE EXCHANGE REACTION BETWEEN CO_2 AND H_2O AT 25℃

摘要: H_2O和CO_2间25℃时同位素交换反应的分离系数测定为α=1.0411±0.0002。此值和S.Eps-tein的测定结果在误差范围内相符。使用了一套标准水样校正了质谱计。实验中使用的CH5型质谱计的校正系数为1.012±0.001。

Abstract: The separation factor of oxygen-18 for isotope exchange reaction between CO2 and H2O at 25℃ was determined to be α = 1.0411±0.0002. The value agrees with that obtained by S. Epstein within experimental error.A set of standard samples was used to calibrate the mass spectrometer. The bias correction K for our mass sepectrometer MAT-CH5 was found to be 1.012±0.001.