Comparison of diffusive gradients in thin films and equilibrium dialysis for the determination of Al, Fe(III) and Zn complexed with dissolved organic matter

The Chemical Speciation of Fe(III) in Freshwaters

“…The literature studies did not involve the quantification of Fe(II) in ultrafiltrates or dialysates, with the exception of Jansen et al (2001) where the absence of Fe(II) was established by colorimetry. Thus, it was not considered appropriate to combine the literature data with the data generated in this study when parameterising Eq.…”

“…Dialysis, on the other hand, is relatively simple and non-invasive and has previously been used to isolate small size fractions of metals (e.g. Beneš and Steinnes 1974;Jansen et al 2001).…”

Trace elements in organic- and iron-rich surficial fluids of the boreal zone: Assessing colloidal forms via dialysis and ultrafiltration

“…The first method allows an in-situ assessment of the equilibrium distribution of solutes having a pore size less than that of the membrane (Alfaro-De la Torre et al, 2000;Gimpel et al, 2003) and it has been previously used to isolate small size fractions of metals (Beneš and Steinnes, 1974;Jansen et al, 2001), to sample and assess the speciation of metals in the lake waters and in sediments (Carignan et al, 1985) and to remove small particles of iron oxy(hydr)oxide from solution . Ultrafiltration, which is more widely used in assessing the state of TE and organic ligands in natural waters (e.g.…”

Ultrafiltration technique in conjunction with competing ligand exchange method for Ni–humics speciation in aquatic environment

“…However, there is no single analytical method which can provide definitive structural or functional information about DOC [17][18][19]. Among the non-destructive analytical methods applied for the characterisation of DOC fractions, high pressure size-exclusion chromatography [20][21][22][23], fluorescence spectroscopy [24][25][26][27], specific ultraviolet absorbance [28][29][30], dialysis [31][32][33][34] and ultrafiltration techniques [35][36][37][38][39][40][41][42][43] appear to be useful.…”