Stability Constants of Chloride Complexes of Lanthanum
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- 作者：Edelmira Ferná ; ndez-Ramí ; rez ; Melania Jimé ; nez-Reyes ; Marcos J. Solache-Rí ; os
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2007
- 出版时间：March 2007
- 年：2007
- 卷：52
- 期：2
- 页码：373 - 376
- 全文大小：52K
- 年卷期：v.52,no.2(March 2007)
- ISSN：1520-5134
文摘
The stability constants of chloro complexes of La3+ were determined in perchloric acid media by means of asolvent extraction method. Dinonyl napthalene sulfonic acid was used as one extractant, and the lanthanumconcentration was measured by an UV-VIS method using xylenol orange at pH 6. The values obtained for 
journals/jceaax/52/i02/eqn/je060290ke10001.gif">are (1 ± 0.2, 0.76 ± 0.09, and, 0.67 ± 0.15) mol-1·dm3 for (2, 3, and 4) mol·dm-3, respectively. For 
le">La,2Cl theyare (0.2 ± 0.1, 0.09 ± 0.02, and 0.1 ± 0.03) mol-2·dm6 for (2, 3 and 4) mol·dm-3, respectively. According tothe specific ion interaction theory (SIT), log journals/jceaax/52/i02/eqn/je060290ke10002.gif"> = 1.4 ± 0.1 and 
lon.gif" BORDER=0 >(LaCl2+, ClO4-) = 0.62 ± 0.03.
le">La,2Cl theyare (0.2 ± 0.1, 0.09 ± 0.02, and 0.1 ± 0.03) mol-2·dm6 for (2, 3 and 4) mol·dm-3, respectively. According tothe specific ion interaction theory (SIT), log lon.gif" BORDER=0 >(LaCl2+, ClO4-) = 0.62 ± 0.03.