Simplified measurement method for dissolved radio-Cs in litter and soil seepage water using copper-substituted Prussian blue
Simplified measurement method for dissolved radio-Cs in litter and soil seepage water using copper-substituted Prussian blue
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铜取代普鲁士蓝测定凋落物和土壤渗水中溶解放射性铯的简化方法
DOI：
10.1016/j.chemosphere.2016.08.010
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发表时间：
2016
期刊：
影响因子：
8.8
通讯作者：
T
中科院分区：
文献类型：
--
作者：
Takada;M,. Yasutaka;T.;Okuda;T
我们开发了一种简单快速的方法，使用浸渍铜取代普鲁士蓝 (Cu-NF) 的无纺布来检测凋落物和/或土壤渗漏水中溶解的放射性 C。在实验室和现场实验中，包含溶解的放射性 C 的凋落物和/或土壤渗漏水通过与七片 Cu-NF 结合的传统蒸渗计系统。然后我们检查了 Cu-NF 中溶解的 137 Cs 的回收率。在流速较快 (11–2200 mm h−1) 的实验室实验中，在 Cu-NF 中检测到了凋落物渗流水中超过 86% 的总溶解 137 Cs，并且超过 82% 的收集到的 137 Cs 存在于前三片中。在现场实验中，99%的总溶解137Cs凋落物渗流水被收集在Cu-NF中，并且超过96%的收集到的137Cs存在于前三片中。此外，溶解的 137 Cs 的回收率随着安装 Cu-NF 长度的增加而增加，可能是因为 Cu-NF 蒸渗仪中的填充土壤随着时间的推移变得更加稳定。最后，由于仅测量 Cu-NF，因此无需进行传统的测量准备工作，例如过滤以去除颗粒放射性 Cs 材料以及蒸发浓缩低浓度放射性 Cs。因此，我们可以通过使用 Cu-NF 蒸渗仪方法来节省测量准备的时间和精力。
We developed a simple and rapid method for detecting dissolved radio-Cs in litter and/or soil seepage water using nonwoven fabrics impregnated with copper-substituted Prussian blue (Cu-NF). In laboratory and field experiments, litter and/or soil seepage water including dissolved radio-Cs were passed through traditional lysimeter systems combined with seven sheets of the Cu-NF. We then examined the recovery ratios of dissolved137Cs in the Cu-NF. In the laboratory experiments with faster flow rates (11–2200 mm h−1), over 86% of the total dissolved137Cs in litter seepage water was detected in the Cu-NF and over 82% of the collected137Cs was present in the first three sheets. In the field experiments, 99% of the total dissolved137Cs litter seepage water was collected in the Cu-NF and more than 96% of the collected137Cs was present in the first three sheets. Furthermore, the recovery ratio of dissolved137Cs increased with increasing installation Cu-NF length, probably because the packed soil in the Cu-NF lysimeter become more stable over time. Finally, because only the Cu-NF is measured, it is not necessary to undertake traditional measurement preparations such as filtration to remove particulate radio-Cs materials and evaporative concentration for low concentration of radio-Cs. As a result, we can save time and effort in measurement preparation by using the Cu-NF lysimeter method.