University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Samarium(III)

  • InChI: InChI=1S/Sm/q+3

@ ChemSpider@ NIST@ PubChem

Citations 3

"Flow Injection Determination And Photochemical Characterization Of Eight Coordinated Chelates Of Heavy Metal Ions. 1. Electrochemical Behavior Of Light Lanthanide Ions In Nonaqueous Solution"
Anal. Sci. Tech. 1994 Volume 7, Issue 3 Pages 361-369
Kang, Sam-Woo;Pak, Chong-Min;Lee,Mi-Do;Song, Myoung-Kyu;Kim, Il-Kwang

Abstract: Voltammetric behavior of some light lanthanide ions(La+, Pr+, Nd+, Sm+ and Eu+) in acetonitrile(AN) and dimethylformamide(DMF) has been investigated by direct current, differential pulse polarography and cyclic voltammetry. The reduction of La+, Pr+ and Nd+ in 0.1 M TEAP proceeded directly to the metallic state through three-electron charge transfer of irreversible process where as Sm+ and Eu+ proceeded by charge transfer of two steps. As the results of the cyclic voltammetric investigation, the first step reduction of Sm+ and Eu+ were a quasireversible reaction, the second step reductions were an irreversible reaction. The cathodic peak currents of the differential pulse polarogram showed adsorptive properties at lower sweep rates and high concentrations of these metal ions. The peak potenital was shifted to a negative petential and the peak current decreased with the increase of percentage of water in AN. On the other hand, the peak potential was shifted to a positive potential and the peak current decreased with an increased percentage of water in DMF.
Voltammetry Polarography Spectrophotometry Organic phase detection

"Flow Injection Spectrofluorimetric Determination Of Samarium(III) Based On Quenching Of Calcein Blue Fluorescence"
Fukuoka Joshi Daigaku Kaseigakubu Kiyo 1990 Volume 21, Issue 1 Pages 5-9
AIHARA Makoto; UCHIKADO Masako

Abstract: Calcein blue has a strong fluorescence (excitation at 370 nm, emission at 440 nm) that is sensitively quenched by the presence of trivalent lanthanide ions. The analysis system consists of a reciprocating pump with two channels (one for HCl carrier solution, and another for reagent solution), a 6-way sample injection valve, a 3 m reaction coil, a spectrofluorometer with a 32 mL flow cell, a 1 m back-pressure coil, and polyethylene tube manifold (0.5 mm i.d.). A series of experiments was conducted to find the optimum analysis conditions for the system. A 100 mL of sample solution containing 10^-6 ~ 10^-4 M Sm(III) was injected into the carrier stream under the following optimum analysis conditions: concentration of reagent, 7 x 10^-5 M in tris(hydroxymethyl)[aminomethane buffer solution at pH 8.0; carrier solution, 10^-4 M HCl; flow rate, 1.0 mL min-1; and manifold tube length, 3 m. The relative standard deviation was ≤0.11%. The system can analyze 40 sample solutions per h, and can be applied to all members of the lanthanides with equal sensitivity.
Fluorescence Quenching Optimization

"Flow Injection Analysis Of Samarium(III) And Europium(III) Based On Solubilizing The Ternary Complexes With Thenoyltrifluoriacetone And Trioctylphosphine Oxide In Micellar Solution"
J. Flow Injection Anal. 1989 Volume 6, Issue 2 Pages 128-136
Makoto Aihara, and Tomoko Nakashimada

Abstract: A portion (100 µL) of sample solution, containing Sm(III) (0.15 to 1.5 µg mL-1), was injected into a carrier stream (1 mL min-1) of 0.5% BL-9EX (nonaoxyethyleneglycoldodecyl ether; Nikko Chemical Co. Ltd.) in acetate buffer of pH 3.5 and reacted with 0.4 mM reagent solution (1 mL min-1) containing thenoyltrifluoroacetone (I) and 0.4 mM trioctylphosphine oxide (II) in the surfactant solution in a reaction coil (1 m x 0.5 mm i.d.). After 33 to 35s, the fluorescence of the ternary complex formed was measured at 596 nm (excitation at 355 nm). The calibration graph was rectilinear over the range studied and the coefficient of variation was 4%. In the determination of 1.2 µg mL-1 of Sm(III), equal amounts of most rare-earth metals (tabulated) did not interfere significantly. Sampling rate was 60 samples h-1. The method was also applied in the determination of Eu(III).
Fluorescence Buffer Surfactant Complexation Interferences Micelle