Polymeric ion-imprinted nanoparticles for mercury speciation in surface waters

Hg2+ion-imprinted polymers sorbents based on dithizone–Hg2+chelation for mercury speciation analysis in environmental and biological samples

“…inductively coupled plasma mass spectrometry (ICP-MS), 12 atomic absorption spectroscopy (AAS), 13 and atomic uorescence spectroscopy (AFS). [14][15][16] However, these instrumental techniques are usually complex, costly, and time-consuming. On the other hand, the trace/ultra-trace presence of targeted analytes in complicated matrices has become a bottleneck for actual application analysis.…”

Methods and recent advances in speciation analysis of mercury chemical species in environmental samples: a review

“…ICP-MS, [3,41,65] UV, [11,37,80] and DAD [14] are the commonly used detectors in CE. In non-chromatographic techniques, AFS, [40,69,70,82] volatile species generation flame less/flame atomization AFS (VSG-FL/FA-AFS), [81] ET-AAS, [5,17] CV-AAS, [68] ICP-MS, [66] ICP-OES, [82] and UV-vis [83][84][85][86] , MeHg, EtHg, and PhHg is almost comparable to the conventional methods. However, difficulty to discriminate the OrgHg species and its less applicability in complex matrix, the method become invalid at high cations concentration (like sea water samples), and yield false results in the presence of protein molecules (like in urine samples) are the main weaknesses of this technique.…”

“…Accordingly, LOD of <4 ng/L and RSD <3.5% were reported along with satisfactory spiking recovery (98-101%) of the analytes from lake and sea waters. Polymeric ion-imprinted nanoparticles as adsorbent materials were prepared and used by Yordanova et al [68] in SPME technique for speciation of Hg 2+ and MeHg in water samples. The method exhibited LOQ of 15 ng/L for Hg 2+ and 20 ng/L for MeHg and spiking recovery in the range of 92-96% when applied on river, sea, and mineral water samples.…”

“…Selective adsorption and separation of Hg 2+ from other species, MeHg, was reported which might be considered as a promising strategy for the advancement of Hg speciation analysis. [68] The report of Yordanova et al [68] indicated the use of polymeric ion-imprinted nanoparticles in SPME technique for selective separation of Hg…”

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

“…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.…”