Simultaneous preconcentration of uranium and thorium in aqueous samples using cloud point extraction

Abstract

Simultaneous cloud point extraction of uranium and thorium in aqueous samples with the highest reported extraction efficiencies and preconcentration factors.

Preparation and characterization of electrodeposited layers as alpha sources for alpha-particle spectrometry

“…In liquid-liquid extraction (LLE), tri-butyl phosphate (TBP) [47], carbamoylmethyl-phosphine oxide (CMPO) [48], tenoyl-tri-fluor cetone (TTA) [49], 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) [50], tri-octylphosphine oxide (TOPO) [51], di-2-ethylhexyl-phosphoric acid (HDEHP) [52], dibutyl-N,N-diethylcarbamylphosphonate (DDCP) [53], tri-octyl amine (TOA) [54], Aliquat ® 336 [55], malonamides [56], diglycolamides [57], etc. have been used as extractants for actinides in various solvents such as organic acids, ketones, ethers, alcohols, and ether.…”

Selective separation of uranyl ions from some lanthanide elements using a promising β-enaminoester ligand by cloud point extraction

“…[1][2][3] The main sources of uranium are seawater and oceans which are estimated to contain 4.5 billion tons. 4,5 In addition, lanthanide and actinide ions are always coexisting with each other. Thus, the separation and preconcentration of uranium get great attention for nuclear energy development and the protection of the ecological environment.…”

Cloud point extraction associated with differential pulse voltammetry: preconcentration and determination of trace uranyl in natural water

“…1 Considering the appreciable solubility of uranyl ions in water, the rapid monitoring and detection of uranyl ions in the environment is urgently needed and extremely important. 2 To date, various analytical methods have been developed for uranium detection in aqueous solutions, such as inductively coupled plasma mass spectrometry, 3,4 inductively coupled plasma optical emission spectrometry 5,6 and X-ray fluorescence spectrometry. 7,8 However, the composition of an actual aqueous environment is complicated.…”

“…To date, CPE has been used to extract a variety of metal ions, including transition metal ions, 20,21 rare earth ions 22,23 and actinide ions. 3 M. M. Elnagar and co-workers used CPE to selectively remove trace iron(III) from titanium solution by controlling the pH and then using ICP-OES for the detection. 24 The extraction efficiency reached 98.5% and the enrichment factor of iron was 100.…”