Abstract The possibility of rare earth elements (REE) separation by ion interaction chromatography (IIC) employing their complexes with diglycolic acid (ODA) in anion exchange mode has been studied theoretically and experimentally. Calculations, assuming that only trivalent complex is significantly uptaken the stationary phase, indicated at pH 4–6, retention lanthanide series should increase fr...

Assessment of complexing properties and mechanisms involved in covalently-bonded carbon-supported hyperbranched polyethyleneimines towards metal ions environmental technical interest.

Strong, dissolved, copper-complexing ligands are known to control copper speciation and bioavailability in most marine waters. We are testing the hypothesis that metal-responsive production of such ligands occurs in the Elizabeth River estuary, and that picoplankton and bacterioplankton produce the ligands. Recent studies utilizing cultures of marine picoplankton (Synechococcus) and bacteriopla...

The NiO-MgO solid solution has been proven to be an efficient catalyst for the carbon dioxide reforming of methane (CRM). However, challenge is still there facilely controlled synthesis single-phase with uniform composition, and interactions between NiO MgO are not consistently correlated CRM performance. To address these issues, in this work, complex-decomposition method was applied regulate c...

a competitive spectrophotometric method has been used for the study of complexation between cu2+, zn2+ and cd2+ (m) and 18-crown-6(18c6, b) in methanol using 4-(2-thiazolylazo) resorcinol (tar, hl) as the colorimetric complexant. absorption spectra of the species in the m-tar-18 c6 system at a various concentrations of 18c6 showed no formation of ternary complex, mlb, and the stoichiometry of t...

In the preparation of nanostructured materials, it is important to optimize synthesis parameters in order to obtain the desired material. This work investigates the role of complexing agents, oxalic acid and tartaric acid, in the production of MgO nanocrystals. Results from simultaneous thermogravimetric analysis (STA) show that the two different synthesis routes yield precursors with different...

Mercury pollution is a global environmental problem, especially in low-resource areas where artisanal iron mining taking place and industrialization on the rise. Therefore, there demand for simple methods determination of toxic metals at low. In this study, an on-field membrane lateral flow test system sensitive specific detection Hg2+ natural waters matrix proposed. For purpose, mercaptosuccin...