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The concentration of Eu(III) cations in model aqueous solutions can be quantified by means of Arsenazo III reagent. Absorbance of the solution was measured at the wavelength λmax = 655 nm. Molar absorptivity reached the value ε655 = 5.5±0.2 · 104 cm-1 mol-1 · dm3. Beer's law was obeyed in the range from 0 to 2 mg · dm-3 Eu(III). The value of limit of detection was established by application of 3σ approach and reached the value of 20.9 μg · dm-3. Repeatability of analysis expressed by relative standard deviation does not exceed the value of ± 8% and apparent recovery lay in acceptable range from 91 to 106 %. Stoichiometry between Eu(III) and Arsenazo III in media of relevant solution was 1:1. The absorbance of the solutions within the linear range of the proposed method maintained a constant value for 60 minutes. Described procedure can be utilized to determination of Eu(III) concentration in real samples, but it is necessary eliminate interfering ions. Cations like La(III), Sm(III), Th(IV), U(VI) and complexing agent EDTA cause significant error at the determination of Eu(III) in model solution. Presented spectrophotometric method could be applied for the determination of europium in the minerals and water samples, however after a suitable separation and preconcentration of target analyte.

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  • BASARGIN N. N. IVANOV V. M. KUZNETSOV V. V. MIKHAILOVA A. V.: 40 years since the discovery of the Arsenazo III reagent. J. Anal. Chem. 55 2000 204-210.

  • BLAZEJAK-DITGES D.: Über die photometrische Bestimmung des Cergehaltes legierter Stähle. Z. Anal. Chem. 251 1970 11-15.

  • DASKALOVA N. VELICHKOV S. SLAVOVA P.: Spectral interferences in the determination of traces of scandium yttrium and rare earth elements in “pure” rare earth matrices by inductively coupled plasma atomic emission spectrometry Part III. Europium. Spectrochim. Acta 51B 1996 733-768.

  • FANG G. Z. PAN J. M. ZHOU W. L. XU B. L.: Study on the Spectrophotometric Determination of Rare Earths with a New Chromogenic Reagent Dibromo-pmethyl- chlorosulfonazo (DBMCSA). Chinese Chem. Lett. 10 1999 851-854.

  • FU X. T. WANG C. M. ZHANG Y. S.: Polarographic study of the Eu(III)- triethylenetetraaminehexaacetic acid complex and determination of europium by oscillopolarography. Anal. Chim. Acta 272 1993 221-225.

  • HEISERMAN D. L.: Exploring Chemical Elements and Their Compounds McGraw- Hill New York 1992 371 pp.

  • MLAKAR M. BRANICA M.: Voltammetric study of europium(III) in the presence of 2-thenoyltrifluoroacetone. Anal. Chim. Acta 247 1991 89-95.

  • POLUEKTOV N. S. KIRILOV A. I. MAKARENKO O. P. VLASOV N. A.: Determination of total rare earth content in natural waters by extraction - spectrophotometric method (English translation). Zavod. Lab. 37 1971 536-537.

  • ROHWER H. HOSTEN E.: pH dependence of the reactions of arsenazo III with the lanthanides. Anal. Chim. Acta. 339 1997 271-277.

  • SAVVIN S. B.: Analytical use of Arsenazo III. Determination of thorium zirconium uranium and rare earth elements. Talanta 8 1961 673-685.

  • SAVVIN S. B.: Analytical applications of Arsenazo III-II* Determination of thorium uranium protactinium neptunium hafnium and scandium. Talanta 11 1964 1-6.

  • STOYANOV A. CHIVIREVA N. A. STOYANOVA I. V. TIMUKHIN E. V. ANTONOVICH V. P.: Indirect photometric determination of europium(II) in some inorganic materials containing aliovalent europium species. J. Anal. Chem. 66 2011 470-475.

  • STRELOW F. W. E.: Quantitative separation of lanthanides and scandium from barium strontium and other elements by cation-exchange chromatography in nitric acid. Anal. Chim. Acta. 120 1980 249-254.

  • TAKATATSU T. SATO A.: Spectrofluorimetric determination of europium and samarium with mixtures of 2-thenoyltrifluoroacetone and tri-n-octylphosphine oxide in aqueous solutions containing triton x-100. Anal. Chim. Acta 108 1979 429-432.

  • VAN LOCO J. ELSKENS M. CROUX CH. BEERNAERT H.: Linearity of calibration curves: use and misuse of the correlation coefficient. Accredit. Qual.Assur. 7 2002 281-285.

  • YAMADA S. KANO K. OGAWA T.: Time discrimination in the laser fluorimetry and ultratrace determination of europium(III) and samarium(III) with 444- trifluoro-1-(2-thienyl)-13-butanedione. Anal. Chim. Acta 134 1982 21-29.

  • ZANG S. MURACHI S. IMASAK T. WATAABE M.: Determination of rare earth impurities in ultrapure europium oxide by inductively-coupled plasma mass spectrometry. Anal. Chim. Acta 314 1995 193-201

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