RO膜前处理方法用于氚测量结果的可靠性验证

The reliability verification of Tritium measurement results based on RO film pretreatment method

目的对RO膜前处理方法用于水中氚测量结果的可靠性进行实验验证。方法分别采用目前通用的常压蒸馏前处理方法与本文研究的RO膜前处理方法处理环境水样,之后对经两种前处理方法处理所得的样品在相同测量条件下进行氚的比对测量。对测量数据进行处理,建立不确定度数学模型并对整个氚的制样、测量过程各不确定度产生来源进行分析。选择比率值En对比对测量结果进行评价,当|En|≤1时代表比对结果满意,实验所测结果在可以接受的范围之内。|En|值越小,比对结果越接近。整个比对测量过程严格质量控制,确保仪器设备性能稳定,测量所得数据准确可靠。结果同一环境水样分别经两种前处理方法所得样品的氚测量结果相近,比率值|En|<1,比对结果满意。结论基于RO膜分离的前处理方法用于水中氚分析,就测量结果而言是可靠的。

Objective To experimentally verify the reliability verification of Tritium measurement results in water based on RO film pretreatment method.Methods The environmental water samples were treated with the current common atmospheric distillation pretreatment method and the RO film pretreatment method studied in this paper,and then Tritium of the samples treated by the two pretreatment methods was compared and measured under the same measurement conditions.The measurement data were processed,the mathematical model of uncertainty was established,and the sources of uncertainty in the whole Tritium sample preparation and measurement process were analyzed.The ratio value En was selected to evaluate the comparison of measurement results,When |En|≤1,it means that the comparison results were satisfactory and the experimental results were within an acceptable range.The smaller the |En| value,the closer the comparison results.The whole comparison and measurement process was strictly controlled to ensure the stability of the equipment performance and the accuracy and reliability of the measured data.Result The Tritium measurement results of the water samples in the same environment obtained by the two pretreatment methods were similar,with the ratio |En|<1,and the comparison results were satisfactory.Conclusion The pretreatment method based on RO film separation was used for Tritium analysis in water,and the measurement results were reliable.