A novel automated off-line preconcentration system for trace metals (Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb) in seawater was developed by improving a commercially available solid-phase extraction system SPE-100 (Hiranuma Sangyo). The utilized chelating resin was NOBIAS Chelate-PA1 (Hitachi High-Technologies) with ethylenediaminetriacetic acid and iminodiacetic acid functional groups. Parts of t...

To understand the roles of metal ions on the catalytic properties and thermostability of the thermostable beta-galactosidase of Saccharopolyspora rectivirgula, a thermophilic actinomycete, we have investigated the binding kinetics and requirements of divalent metal ions by equilibrium dialysis, titration, and metal ion buffer techniques. We found that the monomeric multimetal enzyme (M(r) 136,9...

Recovery of heavy metals from industrial waste streams is becoming an important challenge due to increasing wastewater production. Chelating resins provide effective treatment for selective adsorption metals. Several analytical techniques can be used assess the performance, but LIBS offers unique advantage in-process continuous monitoring. In this work, measurements copper and nickel spectra we...

BACKGROUND, AIM, AND SCOPE Diffusive gradients in thin films (DGT) have been recognized as a suitable tool to assess in situ metal bioavailability in soils. Mine tailings have some singular characteristics such as high heavy-metal concentrations, low pH, or absence of water retention capacity that may compromise the correct application of this technique whose applicability is known to be pH dep...

Given the increasing demand for nickel (Ni) in Li-ion battery industry, agromining chain of processes, based on phytomining Ni combined with hydrometallurgy, has potential to form an important source Ni. Currently, plants grown Ni-rich soils (in this case Odontarrhena chalcidica), having hyperaccumulated Ni, are ashed, and is transferred from ash solution by sulfuric acid leaching. This work fo...

a simple ion imprinted amino-functionalized sorbent was synthesized by coupling activated carbon with iminodiacetic acid, a functional compound for metal chelating, through cyanoric chloride spacer. the resulting sorbent has been characterized using fourier transform infrared spectroscopy (ft-ir), elemental analysis, thermogravimetric analysis (tga) and evaluated for the preconcentration and de...