※一部利用できない機能があります
Formation and Stability of Binary Complexes of Divalent Ecotoxic Ions (Ni, Cu, Zn, Cd, Pb) with Biodegradable Aminopolycarboxylate Chelants (dl-2-(2-Carboxymethyl)Nitrilotriacetic Acid, GLDA, and 3-Hydroxy-2,2′-Iminodisuccinic Acid, HIDS) in Aqueous Solutions
- フォーマット:
- 論文
- 責任表示:
- Begum, Zinnat A. ; Rahman, Ismail M. M. ; Tate, Yousuke ; Egawa, Yuji ; Maki, Teruya ; Hasegawa, Hiroshi
- 言語:
- 英語
- 出版情報:
- Springer Science+Business Media, 2012-11-01
- 著者名:
Begum, Zinnat A. Rahman, Ismail M. M. Tate, Yousuke Egawa, Yuji Maki, Teruya Hasegawa, Hiroshi - 掲載情報:
- Journal of Solution Chemistry
- ISSN:
- 0095-9782
- 巻:
- 41
- 通号:
- 10
- 開始ページ:
- 1713
- 終了ページ:
- 1728
- バージョン:
- author
- 概要:
- The protonation and complex formation equilibria of two biodegradable aminopolycarboxylate chelants {dl-2-(2-carboxymethyl)nitrilotriacetic acid (GLDA) and 3-hydroxy-2,2′-iminodisuccinic acid (HIDS)} with Ni 2+, Cu 2+, Zn 2+, Cd 2+ and Pb 2+ ions were investigated using the potentiometric method at a constant ionic strength of I = 0.10 mol·dm -3 (KCl) in aqueous solutions at 25 ± 0.1 °C. The stability constants of the … proton-chelant and metal-chelant species for each metal ion were determined, and the concentration distributions of various complex species in solution were evaluated for each ion. The stability constants (log 10K ML) of the complexes containing Ni 2+, Cu 2+, Zn 2+, Cd 2+ and Pb 2+ ions followed the identical order of log 10K CuL > log 10K NiL > log 10K PbL > log 10K ZnL > log 10K CdL for either GLDA (13.03 > 12.74 > 11.60 > 11.52 > 10.31) or HIDS (12.63 > 11.30 > 10.21 > 9.76 > 7.58). In each case, the constants obtained for metal-GLDA complexes were larger than the corresponding constants for metal-HIDS complexes. The conditional stability constants (log 10 {Mathematical expression}) of the metal-chelant complexes containing GLDA and HIDS were calculated in terms of pH, and compared with the stability constants for EDTA and other biodegradable chelants. © 2012 Springer Science+Business Media New York. 続きを見る
- URL:
- http://hdl.handle.net/2297/32845
類似資料:
Springer Science+Business Media | |
American Society for Biochemistry and Molecular Biology | |
Springer Science+Business Media | |
[Zinnat Ara Begum] |