0379144 - ÚOCHB 2013 RIV NL eng J - Journal Article
Jaklová Dytrtová, Jana - Jakl, M. - Schröder, Detlef
Complexation of malic acid with cadmium(II) probed by electrospray ionization mass spectrometry.
Talanta. Roč. 90, 15 Feb (2012), s. 63-68. ISSN 0039-9140. E-ISSN 1873-3573
Institutional research plan: CEZ:AV0Z40550506
Keywords : electrospray ionization * hazardous metals * mass spectrometry * root exudates * soil solution
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 3.498, year: 2012 ; AIS: 0.828, rok: 2012
DOI: https://doi.org/10.1016/j.talanta.2011.12.076

Electrospray ionization was used as a technique for the characterization of the interactions between cadmium(II) ions and malic acid (1) in aqueous solution. Particular attention was paid to the nature of the species formed, which generally correspond to complexes of CdX+ cations with neutral malic acid, where X either is the counterion of the metal salt used as a precursor (i.e. X = Cl, l) or corresponds to singly deprotonated malic acid. In pure water solutions, also highly coordinated complexes [Cd(1-H)(1)(2)](+) and [CdCl(1)(2)](+) were detected, whereas the most abundant complexes detected in a sample of soil solution were: [Cd(1-H)(1)](+) and [CdCl(1)](+). With respect to possible application in environmental analysis, the effects of (i) metal salts present in solution, (ii) modest mineralization, and (iii) the matrices of real soil solutions were probed. VVhile the presence of other metals leads to additional complexes, the characteristic species containing both cadmium(II) and mac acid can still be detected with good sensitivity.
Permanent Link: http://hdl.handle.net/11104/0210408