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Titolo:
Absorption spectra of the 4f electron transitions of the praseodymium complex with 1-cyclopropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-piperazinyl)-4-oxo-3-quinoline carboxylic acid hydrochloride and its analytical application
Autore:
Wang, NX; Jiang, W; Si, ZK; Liu, FX; Men, QJ; Xu, XQ;
Indirizzi:
Shandong Univ, Dept Chem, Jinan 250100, Peoples R China Shandong Univ Jinan Peoples R China 250100 Jinan 250100, Peoples R China Shandong Prov City Bldg Sch, Jinan, Peoples R China Shandong Prov City Bldg Sch Jinan Peoples R China inan, Peoples R China Hosp Shandong Univ, Jinan 250100, Peoples R China Hosp Shandong Univ Jinan Peoples R China 250100 250100, Peoples R China
Titolo Testata:
ANALYTICAL SCIENCES
fascicolo: 9, volume: 17, anno: 2001,
pagine: 1091 - 1094
SICI:
0910-6340(200109)17:9<1091:ASOT4E>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEODYMIUM; ERBIUM; SPECTROPHOTOMETRY; HOLMIUM; SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
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., "Absorption spectra of the 4f electron transitions of the praseodymium complex with 1-cyclopropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-piperazinyl)-4-oxo-3-quinoline carboxylic acid hydrochloride and its analytical application", ANAL SCI, 17(9), 2001, pp. 1091-1094

Abstract

The absorption spectra of the praseodymium complex with 1-cyclopropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-piperazinyl)-4-oxo-3-quinoline carboxylic acid hydrochloride (NNFX) has been studied by normal and derivative spectrophotometry. The complex showed maximum absorption at 350 nm at pH 6.0. The stoichiometry of the Pr-NNFX complex was calculated by the molar ratio and continuous variation methods. The ratio of Pr to NNFX was 1:3. The absorption bands of the 4f electron transitions of the praseodymium complex with NNFX are enhanced markedly, especially the wavelength at 481 nm. Using the third-derivative spectrum, the calibration graph is linear over the range 2.5 x 10(-5) - 3.5 x 10(-4) mol dm(-3) for praseodymium. The detection limits (signal-to-noise ratio of 2) is 1.4 x 10(-6) mol dm(-3). The relative standarddeviation is 1.2% for 7.0 x 10(-5) mot dm(-3) of praseodymium. A method for the direct determination of praseodymium in rare earth mixtures with goodaccuracy and selectivity is described.

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Documento generato il 20/01/20 alle ore 10:17:18