Organophosphorus-Modified Lanthanide Nitrates as Potential Actinide Oxide Aerosol Surrogates.
Timothy J BoyleXavier J RobinsonFernando GuerreroDiana PeralesJoshua A HubbardRoger E CramerPublished in: Inorganic chemistry (2020)
In search of suitable simulants for aerosol uranium waste products from Plutonium Uranium Redox Extraction (PUREX) process burns, a series of lanthanide nitrate hydrates ([Ln(κ2-NO3)3·nH2O]) were dissolved in the presence of tributylphosphate (O═P(O(CH2)3CH3)3) referred to as TBP) in kerosene or triphenylphosphate (O═P(O(C6H5) referred to as TPhP) in acetone. The crystal structure of the TPhP derivatives of the lanthanide nitrate series and uranium nitrate were solved as [Ln(κ2-NO3)3(TPhP)3] (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and [U(O)2(κ2-NO3)2(TPhP)2] (U), respectively. The lanthanide-TBP, Ln, and U were further characterized using FTIR spectroscopy, 31P NMR spectroscopy, thermogravimetric analysis, and X-ray fluorescence spectroscopy. Further, thermal treatment of the lanthanide-TBP, Ln, and U using a box furnace to mimic pyrolysis conditions was found by PXRD analyses to generate a phosphate phase [LnP3O9 or UP2O7) for all systems. The resultant nuclear waste fire contaminant particulates will impact both aerosol transport and toxicity assessments.
Keyphrases
- single molecule
- energy transfer
- nitric oxide
- drinking water
- room temperature
- sewage sludge
- metal organic framework
- high resolution
- water soluble
- municipal solid waste
- oxidative stress
- transcription factor
- mycobacterium tuberculosis
- magnetic resonance imaging
- magnetic resonance
- mass spectrometry
- organic matter
- signaling pathway
- binding protein
- smoking cessation
- cell proliferation
- combination therapy