High-throughput solid-phase extraction of metal ions using an iminodiacetate chelating porous disk prepared by graft polymerization

Chitosan-g-poly(acrylic acid) hydrogel with crosslinked polymeric networks for Ni2+ recovery

“…In recent years, polymer materials have attracted much attention as the adsorbent for recovering or separating metals from impurities [12,13]. Hydrogel is a three-dimensional network of hydrophilic polymers crosslinked by chemical or physical interactions [14,15], and can be prepared with different functional groups such as carboxylic acid, amine, hydroxyl, and sulfonic acid groups.…”

Evaluation of Antibacterial Effect by Using a Fibrous Grafted Material Loaded Ag Ligand

“…In the case of RIGP, a metal adsorbent could be synthesized by introducing the chelate function to a trunk polymeric material [18] [19]. Grafted adsorbent of iminodiacetate (IDA) type had high affinity for many kinds of metals such as cadmium [20] [21] and lead [21] [22], and the adsorbed metals on the adsorbent could be easily eluted with an acid [23] [24].…”

Crosslinked-Chelating Porous Sheet with High Dynamic Binding Capacity of Metal Ions

“…DBC, which is also referred to as a practical binding capacity, is defined as the amount of molecules or ions adsorbed onto the adsorbent until the concentration of the effluent flowing through the SPE cartridge reaches 5 or 10% that of the feed. [14,15] Recently, we have prepared a novel adsorbent in sheet form [16,17] instead of conventional adsorbents in bead form: the functional groups were immobilized onto the polymer chain grafted to the pore surface of a porous polyethylene sheet by electron-beam-induced graft polymerization and subsequent chemical modifications. The permeation of a sample solution through the pores of the porous sheet minimizes the diffusional path of target molecules or ions to the functional groups, as shown in Fig.…”

“…[20] However, the shape of a porous hollow-fiber membrane is not practical for SPE because its module is relatively complicated compared with conventional SPE cartridges. In our previous publication, [16] we compared the binding performance of copper ions between a noncrosslinked chelating porous disk and a commercially available chelating disk (Empore chelate cartridge) and demonstrated that the dynamic binding capacity of the former was 1.7-fold than that of the latter at the same flow rate of the sample solution.…”