Noguchi H, Fukutani S, Yokoyama S, Kinouchi N
Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan.
Radiat Prot Dosimetry. 2001;93(2):167-72. doi: 10.1093/oxfordjournals.rpd.a006425.
Deposition of tritiated water vapour in the atmosphere to a water surface was studied in an outdoor field, where elevated concentrations of tritiated water vapour existed in the atmosphere over twelve days. Exchange velocities of tritiated water vapour between air and water were evaluated from tritium concentrations in air and water obtained in the field experiment. It was found that the average of outdoor exchange velocities was about three times greater than that observed in a nuclear reactor room previously. Relationships between the outdoor exchange velocities and meteorological conditions were analysed to derive a multiple correlation equation. The wind speed was strongly correlated with the exchange velocity and the air temperature appeared to have an enhancing effect on the velocity. These observations were supported by a follow-up experiment conducted on a laboratory scale.
在一个室外场地研究了大气中氚化水蒸气在水面上的沉积情况，该场地大气中氚化水蒸气的浓度在十二天内一直处于较高水平。根据现场实验中获得的空气和水中的氚浓度，评估了空气与水之间氚化水蒸气的交换速度。结果发现，室外交换速度的平均值大约是之前在核反应堆室中观测到的值的三倍。分析了室外交换速度与气象条件之间的关系，以得出多元相关方程。风速与交换速度密切相关，气温似乎对该速度有增强作用。在实验室规模上进行的后续实验支持了这些观察结果。
