Abstract：
We investigated the tritium concentration in commercial modern D2O reagents frequently used in nuclear magnetic resonance analysis for analytical chemistry and in environmental tracer testing. The concentration of tritium in 11 D2O and 1 H218O reagents ranged from 61 Bq/L (5 × 102 TU) to 2.5 × 103 Bq/L (2 × 104 TU) in order of magnitude. The tritium concentration in the D2O reagents have increased with the increasing purity of D2O. The tritium concentration in all reagents was an order of magnitude greater than that in the surface waters at the Fukushima off-site of the Fukushima Daiichi Nuclear Power Plant after the accident in 2011 and in precipitation during the nuclear test era. However, the concentration of the tritium was lower than the regulatory limit for the concentration of tritium in drinking water accepted by the World Health Organization guidelines. The internal exposure effects from drinking the tritium water, which is contaminated by the tritium condensed in the reagent production processes, were negligible, even if the reagent was used in the environmental tracer test.
摘要：
我们研究了商业现代D2O试剂中的tri浓度，该试剂常用于核磁共振分析以进行分析化学和环境示踪剂测试。11D2O和1H218O试剂中tri的浓度范围为61Bq/L（5×102TU）至2.5×103Bq/L（2×104TU）。D2O试剂中的tri浓度随着D2O纯度的增加而增加。2011年事故发生后，所有试剂中的tri浓度均比福岛第一核电站场外的福岛地表水中的浓度以及核试验时期的降水中的浓度高一个数量级。然而,氚的浓度低于世界卫生组织指南所接受的饮用水中氚浓度的监管限值。饮用氚水的内部暴露效应，被试剂生产过程中凝结的氚污染，微不足道，即使该试剂用于环境示踪剂测试。
