Ion-imprinted beads for molecular recognition based mercury removal from human serum

Mercury speciation in seawater by liquid chromatography-inductively coupled plasma-mass spectrometry following solid phase extraction pre-concentration by using an ionic imprinted polymer based on methyl-mercury–phenobarbital interaction

“…First attempts for eluting the retained analytes by using a 0.1 M/0.1 M thiourea/hydrochloric acid solution [23,25,27,28,31] led to an incomplete elution, as well as a partial reduction of Hg(II) into Hg(I) and bad chromatographic profiles for Me-Hg. The previously optimized mobile phase (0.4% (v/v) 2-mercaptoethanol, 10% (v/v) methanol, pH 2.5) was tried as an eluting solution, and similar chromatograms to those obtained when injecting aqueous standards were obtained.…”

“…The main drawback of the latter approach is the fact that complexing ligands showing vinyl groups are scarce and are not commercially available, so the synthesis of these complexing monomers must be performed in the laboratory. Although some bifunctional monomers have been used for preparing IIPs for mercury recognition [23,24], most of the synthesized IIPs used non-vinylated ligands trapped in the polymeric matrix after ternary template-non-vinylated ligand-vinylated monomer interactions when using Hg(II) [25][26][27][28][29][30] and methyl-mercury (Me-Hg) [31] as templates.…”

Application of an Hg2+ selective imprinted polymer as a new modifying agent for the preparation of a novel highly selective and sensitive electrochemical sensor for the determination of ultratrace mercury ions

“…Liu et al [56] have prepared IIP for mercury by copolymerizing mercury chloride, diazoaminobenzene (DAAB) and vinylpyridine (VP) using ethyleneglycoldimethacrylate (EGDMA) as a cross-linker. Another work in this field is from Denizli and his coworkers [53] who applied N-Methacryloyl-(l)-cysteine as both a functional monomer and complexing agent. Copolymerization of the methacrylic acid as the monomer, and trimethylolpropane trimethacrylate as the cross-linking agent, in the presence of Hg(II)-1-(2-thiazolylazo)-2-naphtholcomplex is another method reported by Dakova et al [55].…”

“…This technology can also be used for the preparation of polymers containing inorganic cation selective sites as the so-called ion imprinted polymers (IIP) [49][50][51][52]. Different kinds of imprinted polymers have so far been reported for the recognition of mercury ions [53][54][55][56].…”

Synthesis and Adsorption Performance of Surface‐Grafted Co(II)‐Imprinted Polymer for Selective Removal of Cobalt

“…4 In the ion-imprinting process, the selectivity of a polymeric adsorbent is based on the specificity of the ligand, on the coordination geometry and coordination number of the ions, on their charges, and on their sizes. 5 Recently, there are some reports on the application of IIP to preconcentration of the heavy metal ions. 6,7 Chitosan (CTS) is one of the most abundant biopolymers in nature, and has remarkable properties such as nontoxicity, high biocompatibility and biodegradation.…”