利用液芯波导毛细管池(LWCC)和光纤技术,研制了高灵敏的钚价态分析装置.该装置小巧、便携,操作简单、快速.液芯波导毛细管池与光纤的应用,大大提高了仪器的灵敏度,并能够实现放射性样品的远距离分析.在对钚的价态分析中,Pu(Ⅲ)、Pu(Ⅳ)和Pu(Ⅵ)的测量精度分别达到2.3％、3.7％、5.6％,检出限为0.99、1.08、0.03 mg/L,该装置在核燃料后处理钚价态的分析中具有一定的应用价值.%A high-sensitive plutonium valence state analysis installation has been developed by using liquid waveguide capillary cell(LWCC) and optic fiber. A 0. 5 m LWCC is connected via optical fibers to a spectrophotometer. The analysis installation is small and portable, the operation is simple and rapid. The application of LWCC and optic fiber, improves markedly the sensitivity of the analyzer. Furthermore, it can be used to analyze remote radioactive samples. The determination precisions of Pu( Ⅲ ), Pu(Ⅳ)and Pu(Ⅵ )are 2. 3% , 3.7% and 5. 6% respectively for Pu solution and the detection limits of the method of them are 0. 99 mg/L, 1. 08 mg/L and 0. 03 mg/L respectively. Therefore the installation has the prospective application in the analysis of Pu valence state in the nuclear fuel reprocessing.
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