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Titolo:
Derivative spectrophotometric determination of praseodymium in rare earth mixtures with lomefloxacin
Autore:
Wang, NX; Ren, XZ; Si, ZK; Jiang, W; Liu, CB; Liu, XR;
Indirizzi:
Shandong Univ, Dept Chem, Jinan 250100, Peoples R China Shandong Univ Jinan Peoples R China 250100 Jinan 250100, Peoples R China
Titolo Testata:
TALANTA
fascicolo: 3, volume: 51, anno: 2000,
pagine: 595 - 598
SICI:
0039-9140(20000306)51:3<595:DSDOPI>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
3RD-DERIVATIVE SPECTROPHOTOMETRY; ABSORPTION-SPECTRA; NEODYMIUM; ERBIUM; HOLMIUM;
Keywords:
praseodymium; determination; lomefloxacin; derivative spectra;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, NX Shandong Univ, Dept Chem, Jinan 250100, Peoples R China Shandong Univ Jinan Peoples R China 250100 100, Peoples R China
Citazione:
N.X. Wang et al., "Derivative spectrophotometric determination of praseodymium in rare earth mixtures with lomefloxacin", TALANTA, 51(3), 2000, pp. 595-598

Abstract

Praseodymium forms a Pr(LMFX)(3) complex with lomefloxacin. In this paper,the absorption spectra of the complex has been investigated by applying conventional and derivative spectrophotometric methods. It was found that lomefloxacin could form a stable complex with praseodymium in the pH 6.5-8.5 media. The absorption intensity of the complex is 4.5-fold more than PrCl3. Using the second derivative spectra, the sensitivity is 7.4 times higher for Pr than in the normal method (zero derivative spectra). The second derivative spectrophotometry for determination of praseodymium in the presence ofother rare earths has been developed. The calibration curves were linear in the range of 3.5-65 mu g ml(-1) for Pr. The detection limit is 0.85 mu g ml(-1). The method is satisfactory for the determination of praseodymium inmixed rare earths. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 26/01/20 alle ore 01:19:25