Equilibrium dialysis—ligand exchange: a novel method for determining conditional stability constants of radionuclide—humic acid complexes
References (35)
- et al.
Inorg. Chim. Acta
(1987) - et al.
Radiochim. Acta
(1989) - et al.
J. Inorg. Nucl. Chem.
(1978) - et al.
J. Inorg. Nucl. Chem.
(1980) - et al.
Anal. Chim. Acta
(1983) - et al.
Mar. Chem.
(1982) - et al.
Anal. Chim. Acta
(1990) - et al.
Water Res.
(1988) - et al.(1985)
- et al.
Environ. Sci. Technol.
(1982)
Radiochim. Acta
Radiochim. Acta
Radiochim. Acta
Radiochim. Acta
J. Inorg. Nucl. Chem.
Cited by (38)
Complexation of europium and uranium with natural organic matter (NOM) in highly saline water matrices analysed by ultrafiltration and inductively coupled plasma mass spectrometry (ICP-MS)
2017, Applied GeochemistryCitation Excerpt :Such complex stability constants are required for geochemical modelling of metal-ion behavior in the environment after collecting them in a thermodynamic database (Marquardt, 2008, 2012). Meanwhile, for the determination of complex stability constants a large number of particularly speculative or inconsistent humic ion-binding models and their modifications have been proposed in the literature (Dzombak et al., 1986; Hummel, 1997; Kinniburgh et al., 1996, 1999; Kirishima et al., 2010; Marsac et al., 2011; Milne et al., 2001, 2003; Perdue and Lytle, 1983; Tipping, 1998; Tipping and Hurley, 1992; Tipping et al., 2011; Van Loon et al., 1992). However, in Radiological Performance Assessment (RPA) studies it is essential to predict long-term radionuclide transport.
Influence of metal loading and humic acid functional groups on the complexation behavior of trivalent lanthanides analyzed by CE-ICP-MS
2014, Analytica Chimica ActaCitation Excerpt :5.3) for the used CE conditions [52]. Meanwhile, a large number of humic ion-binding models and their modifications have been proposed in the literature [53–68]. However, in radiological performance assessment (RPA) studies it is essential to predict long-term radionuclide transport.
Cobalt
2011, Fish PhysiologyCitation Excerpt :The effect of complexation and adsorption on Co speciation is illustrated in Fig. 6.1 based on a modeling exercise by Albrecht (2003). Several studies examining Co complexation by fulvic and humic acids have reported conditional thermodynamic stability constants between 102.7 and 108.3 M (van Loon et al., 1992; Higgo et al., 1993; Westall et al., 1995; Glaus et al., 2000; Kurk and Choppin, 2000; Hamilton-Taylor et al., 2002; Chang et al., 2006). Qian et al. (1998) have estimated a Co-ligand conditional thermodynamic stability constant of 109.5–1011.6 M. High conditional thermodynamic stability constants have also been determined for Co complexes in estuarine and marine waters (K in the range 1015–1016 M) and although the ligands involved in complexation were not identified it has been postulated that Co was present as part of cobalamin where Co+ is chelated in the corrin ring of the molecule.
Analytical techniques for speciation analysis of aqueous long-lived radionuclides in environmental matrices
2008, TrAC - Trends in Analytical ChemistryCitation Excerpt :Radiometric methods have traditionally been used for the determination of radio-elements, but these techniques are generally best suited to species with half-lives below 1000 years and cannot provide speciation information [10]. Mass spectrometric (MS) and spectroscopic techniques, including resonance-ionisation MS (RIMS) [11], accelerator MS (AMS) [12], inductively coupled plasma-MS (ICP-MS) [13] and inductively coupled plasma-atomic emission spectrometry (ICP-AES) [14], have all been used for the quantitative determination of long-lived radionuclides. The main techniques applied to the determination of long-lived radionuclide species are shown in Table 2 to illustrate the limited number of techniques available for direct speciation analysis, and the low number of analyses involving environmental matrices [15].