TY - JOUR AU - Titani, Toshizo AB - 1935] The Isotopic Fractionation of Water by Distillation.39 THE ISOTOPIC FRACTIONATION OF WATER BY DISTILLATION. By Masao HARADA and Toshizo TITANI. Received October 29th, 1934. Published January 28th, 1935. In the course of purifying water by distillation, we found always some small difference in density between the first and last portions of the distillate. In order to ascertain whether this difference in density is due to the isotopic fractionation of water or to some impurities dissolved therein, we carried out a fractional distillation of a considerable amount of water and measured the densities of its most and least volatile fractions respectively. The method employed was as follows : The distilling flask was made of glass and fitted with a glass still of Hempel type, 3.5 cm. wide and 17 cm. long, which was filled with glass beads having 4 to 5 mm. diameter up to 6 to 7 cm. height. During the distillation a continuous flow of air free from carbonn dioxide was sent through the still column. The distilla- tion was carried out in three stages; namely, in the first stage, a given volume of water was equally divided into the distillate (D1) and. the residue (R1) ; TI - THE ISOTOPIC FRACTIONATION OF WATER BY DISTILLATION JO - Bulletin of the Chemical Society of Japan DO - 10.1246/bcsj.10.39 DA - 2006-04-12 UR - https://www.deepdyve.com/lp/oxford-university-press/the-isotopic-fractionation-of-water-by-distillation-kzyOLMBj6Q SP - 39 EP - 40 VL - 10 IS - 1 DP - DeepDyve ER -