Инд. авторы:	Stepanchikova S.A., Biteikina R.P.
Заглавие:	Spectrophotometric study of rare-earth element complexation in alkaline and near-neutral solutions
Библ. ссылка:	Stepanchikova S.A., Biteikina R.P. Spectrophotometric study of rare-earth element complexation in alkaline and near-neutral solutions // Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya. - 2011. - Vol.37. - Iss. 1. - P.64-71. - ISSN 1070-3284.
Внешние системы:	DOI: 10.1134/S1070328411010143; SCOPUS: 2-s2.0-79551695753;
Реферат:	eng: The hydrolytic behavior of La, Nd, Eu, Gd, Ho, and Tm in KOH solutions was studied at 25°C and a saturated vapor pressure using spectrophotometry with m-cresol purple and 2-naphthol as pH indicators. It was found that freshly prepared solutions of MCl3 (M = La, Nd, Eu, Gd, Ho, and Tm) at pH 6.0-10.1 contain the ions M3+, M(OH)2+, M(OH) 2 +, and M(OH) 3 0, for Ho and Tm, the complex anions M(OH) 4 - . were also detected. The formation constants of the hydroxide complexes a ionic strengths I = 0 were obtained as the parameters of linear regression equations that characterize the spectra of the indicators in the solutions under study. © 2011 Pleiades Publishing, Ltd.
Ключевые слова:	Complex anions; Formation constants; KOH solution; Linear regression equation; m-Cresol; Holmium; Spectrophotometry; Potassium hydroxide; Phenols; Neodymium; Ionic strength; Gadolinium; Europium; Complexation; Spectrophotometric study; Saturated vapor pressure; PH indicator; 2-naphthols; Neutral solution;
Издано:	2011
Физ. характеристика:	с.64-71