A pretreatment protocol is presented that allows for the quantitative conversion and subsequent in situ spectroscopic analysis of [Re(CO)3]+ species in simulated Hanford tank waste. The protocol encompasses adding a simulated waste sample containing the non-emissive [Re(CO)3]+ species to a developer solution that enables the rapid, quantitative conversion of the non-emissive species to a luminescent species which can then be detected spectroscopically. The [Re(CO)3]+ 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)3]+ 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.
Revised: February 27, 2020 |
Published: February 6, 2018
Citation
Branch S.D., A.D. French, A.M. Lines, B.M. Rapko, W.R. Heineman, and S.A. Bryan. 2018.In situ quantification of [Re(CO)3]+ by fluorescence spectroscopy in simulated Hanford tank waste.Environmental Science & Technology 52, no. 3:1357-1364.PNNL-SA-128552.doi:10.1021/acs.est.7b04222