Hg(II)-imprinted thiol-functionalized mesoporous sorbent micro-column preconcentration of trace mercury and determination by inductively coupled plasma optical emission spectrometry

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

“…IIPs are often puzzled by the problem of low selectivity because many metal ions have the same charge, similar ionic radius and properties. Mercury ion (Hg 2+ ), an environmentally and toxicologically important element, being a research hotspot [17][18][19][20], also has been used as template to prepare Hg 2+ -IIPs for preconcentration of trace Hg 2+ [21][22][23]. However, the most commonly used functional monomers for HgIIPs, such as 4-VP and 3-mercaptopropyltrimethoxysilane (MPTAS), can provide coordination for many ions and thereby results in the low selectivity [21][22][23].…”

“…Mercury ion (Hg 2+ ), an environmentally and toxicologically important element, being a research hotspot [17][18][19][20], also has been used as template to prepare Hg 2+ -IIPs for preconcentration of trace Hg 2+ [21][22][23]. However, the most commonly used functional monomers for HgIIPs, such as 4-VP and 3-mercaptopropyltrimethoxysilane (MPTAS), can provide coordination for many ions and thereby results in the low selectivity [21][22][23]. Recently, for many selective and sensitive chemosensors toward Hg 2+ , thymine (T) bases in DNA sequences have often been used as ligand because they can form stable T-Hg 2+ -T complexes while other metal ions do not show any evident interaction with T [24][25][26].…”

In situ solvent formation microextraction based on ionic liquids: A novel sample preparation technique for determination of inorganic species in saline solutions

“…Determination of mercury in water samples by ISFME and spectrophotometric detection was compared with other methods [38,[55][56][57][58][59] and the results are shown in Table 4. As can be seen, the LOD of ISFME-spectrophotometry using only 5 mL of sample is better than that of SPE-spectrophotometry except for mesoporous sorbent micro-column-ICP-OES, metal ion imprinted polymer column-CVAAS and LLE-CVAAS, which used large sample Table 3 Determination of Hg (II) in mineral, river and seawater samples and relative recoveries of spiked samples.…”

Preconcentration of Total Mercury from River Water by Anion Exchange Mechanism

“…2 The second method requires the immobilization of a ligand on the solid matrix used through a well-defined synthetic procedure. 3 Then, the aqueous sample can be preconcentrated through the synthesized resin. The second method offers a stronger resin capable of the formation of stable metal complexes with resin that is evidenced by a high preconcentration factor.…”