Department of Chemistry, University of Cincinnati , Cincinnati, Ohio 45221-0172, United States.
Pacific Northwest National Laboratory , Richland, Washington 99352, United States.
Environ Sci Technol. 2018 Feb 6;52(3):1357-1364. doi: 10.1021/acs.est.7b04222. Epub 2018 Jan 10.
A pretreatment protocol is presented that allows for the quantitative conversion and subsequent in situ spectroscopic analysis of [Re(CO)] species in simulated Hanford tank waste. In this test case, the nonradioactive metal rhenium is substituted for technetium (Tc-99), a weak beta emitter, to demonstrate proof of concept for a method to measure a nonpertechnetate form of technetium in Hanford tank waste. The protocol encompasses adding a simulated waste sample containing the nonemissive [Re(CO)] species to a developer solution that enables the rapid, quantitative conversion of the nonemissive species to a luminescent species which can then be detected spectroscopically. The [Re(CO)] species concentration in an alkaline, simulated Hanford tank waste supernatant can be quantified by the standard addition method. In a test case, the [Re(CO)] species was measured to be at a concentration of 38.9 μM, which was a difference of 2.01% from the actual concentration of 39.7 μM.
介绍了一种预处理方案，可实现模拟汉福德罐废物中 [Re(CO)] 物种的定量转化和随后的原位光谱分析。在这个案例中，用非放射性金属铼代替弱 β 发射体锝（Tc-99），以证明一种测量汉福德罐废物中非过氧代锝形式的锝的方法的概念验证。该方案包括将含有非发射性 [Re(CO)] 物种的模拟废物样品添加到开发者溶液中，使非发射性物种快速、定量地转化为可通过光谱学检测到的发光物种。碱性模拟汉福德罐废物上清液中 [Re(CO)] 物种的浓度可以通过标准添加法进行定量。在一个案例中，[Re(CO)] 物种的浓度被测量为 38.9 μM，与实际浓度 39.7 μM 的差异为 2.01%。
