✦ LIBER ✦

Determination of curium at 0.1 ng 1−1 levels in a micellar medium by time-resolved laser-induced spectrofluorimetry

✍ Scribed by C. Moulin; P. Decambox; P. Mauchien

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 558 KB
Volume: 254
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(91)90020-6

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✦ Synopsis

Time-resolved laser-induced spectrofluorimetry was used for the determination of curium complexed with thenoyltrifluoroacetone (TI'A) and tri-n-octylphosphine oxide (TOPO) in a non-ionic micellar medium (T&on X-100). The results obtained were compared with those obtained in carbonate medium. With suitable complexing reagents concentration and pH, curium can be determined at concentrations down to 5 X lo-l3 M. This limit of detection corresponds to 0.1 ng 1-l or 2 x 10' molecules in the interaction volume. Limitations and improvements to the system in terms of limit of detection are discussed.