Anh Ha Lan, Anh Vo Thi, Giap Trinh Van, Hong Thinh Nguyen Thi, Minh Tran Khanh, Hoai Vu
Isotope Hydrology Laboratory, Institute for Nuclear Science and Technology (INST), 179 HoangQuocViet, CauGiay, Hanoi, Vietnam.
Isotope Hydrology Laboratory, Institute for Nuclear Science and Technology (INST), 179 HoangQuocViet, CauGiay, Hanoi, Vietnam.
J Environ Radioact. 2018 Dec;192:143-149. doi: 10.1016/j.jenvrad.2018.06.009. Epub 2018 Jun 20.
Tritium is a radioisotope of hydrogen and a component of the water molecule. It is a marker for reservoirs such as the stratosphere, troposphere, and oceans involved in the hydrological cycle. Tritium monitoring is an essential research tool in hydro-climate, dating for water and recharge groundwater. The Isotope Hydrology Laboratory has collected monthly precipitation samples in Hanoi for tritium concentration analysis. This paper reports the tritium concentrations in precipitation in the city from 2011 to 2016. The results show that monthly tritium concentration reached a maximum of 7.07 Tritium Units (TU) in August 2011. The mean annual tritium concentration stabilized from 2.03 to 3.36 TU. It suggests that tritium in monitoring station precipitation is predominantly natural. The seasonal variation trend of H in precipitation at the Hanoi station is similar to those monitored at the Hong Kong station. The correlation of tritium and rainfall was also estimated.
氚是氢的一种放射性同位素，也是水分子的一个组成部分。它是参与水文循环的平流层、对流层和海洋等储库的一种标志物。氚监测是水文气候、水年代测定和地下水补给研究中的一项重要工具。同位素水文实验室已在河内采集了月度降水样本用于氚浓度分析。本文报告了2011年至2016年该市降水中的氚浓度。结果表明，2011年8月月度氚浓度最高达到7.07 氚单位（TU）。年平均氚浓度稳定在2.03至3.36 TU之间。这表明监测站降水中的氚主要是天然的。河内站降水中氚的季节变化趋势与在香港站监测到的趋势相似。还估算了氚与降雨量的相关性。
