利用脱气膜技术检测水中14C

Degassing membrane for 14C detection in water

针对目前较为流行的水中14C检测方法的氮气消耗量大、耗时较长等问题,该文将脱气膜技术引入水中14C的检测。设计了一套可行的采用脱气膜技术的水中14C分离装置,并通过实验验证了该装置在酸性条件下工作的可行性,分析了该装置的影响因素、氮气消耗、耗时等性能。实验结果表明:采用脱气膜技术的水中14C分离方法对无机碳回收率达到95%,耗时短,氮气消耗少,应用于水中14C检测具有明确优势。

Current methods for detecting 14C in water are very slow and use large amounts of nitrogen. This study used a degassing membrane to improve the 14C detection in water. A 14C water separation device built using the degassing membrane was evaluated experimentally for acidic conditions to evaluate the effects of various factors on the nitrogen consumption and time. The experimental results show that the 14C separation in water using the degassing membrane has a 95% inorganic carbon recovery rate with short operating times and less nitrogen consumption.