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Komplexone XXX. Diäthylentriamin‐pentaessigsäure (DTPA)
Author(s) -
Anderegg G.,
Nägeli P.,
Müller F.,
Schwarzenbach G.
Publication year - 1959
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19590420324
Subject(s) - chemistry , diethylenetriamine , metal , titration , stability constants of complexes , metal ions in aqueous solution , chelation , nuclear chemistry , ion , inorganic chemistry , organic chemistry
Diethylenetriamine‐pentaacetic acid (DTPA) forms with metal cations M v + the complexes MZ v −5 ; MHZ v −4 , M 2 Z 2 v −5 , where Z 5− stands for the anion of DTPA. Complexes MM′Z v 1 + V 2 −5 containing two different metals are also formed. The stability constants of these species with Ca, Mn, Fe II , Fe III , Co, Ni, Cu, Zn, Cd, Pb, Hg, Ce have been determined, using 7 methods. The DTPA‐complexes are considerably more stable than the corresponding EDTA‐complexes which makes DTPA a considerably better titrant in complexometry.