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Rare Metals

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01.08.2015

Determination of trace gadolinium by catalytic kinetic fluorimetry

verfasst von: Juan-Ping Chen, Yu-Ying Liu, Ying-Jie Gao

Erschienen in: Rare Metals | Ausgabe 8/2015

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Abstract

There was a significant catalytic effect of trace Gd(III) ions on the oxidative reaction of potassium persulfate with Saffron T in the acetic acid–sodium acetate buffer solution. Thus, a catalytic kinetic fluorimetry method for the determination of trace Gd(III) ions was established. The factors such as acidity, concentration of reagents, reaction time, and temperature as well as influence of coexisting ions were discussed. The optimum reaction conditions were established. The apparent rate constant and apparent activation energy of the reaction were determined. The linear range is 0.02–0.10 μg·ml⁻¹, and the detection limit is 7.27 × 10⁻⁴ μg·ml⁻¹. This method was used for the determination of gadolinium in the samples of lanthanum acetate with RSD of 0.9%–3.1%.

Vorheriger Artikel Preparation of luminescent polystyrene microspheres via surface-modified route with rare earth (Eu3+ and Tb3+) complexes linked to 2,2′-bipyridine

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Titel: Determination of trace gadolinium by catalytic kinetic fluorimetry
verfasst von: Juan-Ping Chen
Yu-Ying Liu
Ying-Jie Gao
Publikationsdatum: 01.08.2015
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 8/2015
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-013-0085-2

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