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

Journal of Chromatography. a
María Pilar Rodríguez-ReinoAntonio Moreda-Piñeiro

Abstract

Trace levels of inorganic mercury, methyl-mercury and ethyl-mercury have been assessed in seawater by high performance liquid chromatography (HPLC) hyphenated with inductively coupled plasma-mass spectrometry (ICP-MS) after solid phase extraction (SPE) pre-concentration with a novel synthesized ionic imprinted polymer. The adsorbent material was prepared by trapping a non-vinylated chelating ligand (phenobarbital) via imprinting of a ternary mixed ligand complex of the non-vinylated chelating agent, the template (methyl-mercury), and the vinyl ligand (metacrylic acid, MAA). Ethylene dimetacrylate (EDMA) and 2,2'-azobisisobutyronitrile (AIBN) were used as cross-linker and initiator reagents, respectively; and the precipitation polymerization technique was used in a porogen of acetonitrile/water (4:1). The best retention properties for methyl-mercury, inorganic mercury and ethyl-mercury species from seawater were obtained when loading 200 mL of sample adjusted to pH 8.0 and at a flow rate of 2.0 mL min(-1) on a column-packed with 200mg of the material. Quantitative mercury species recoveries were obtained using 4 mL of an eluting solution consisting of 0.8% (v/v) 2-mercaptoethanol and 20% (v/v) methanol (pH adjusted to 4.5) pumpe...Continue Reading

References

Sep 5, 2006·International Journal of Biological Macromolecules·Müge AndaçAdil Denizli
Aug 29, 2007·Analytica Chimica Acta·Yongwen LiuFeng Feng
Aug 29, 2007·Analytica Chimica Acta·T Prasada RaoS Daniel
Feb 15, 2007·Talanta·Sibel BüyüktiryakiArzu Ersöz
Jul 10, 2012·Journal of Hazardous Materials·Ivanka DakovaIrina Karadjova
Apr 5, 2014·Journal of Molecular Recognition : JMR·Michael J WhitcombeIan A Nicholls

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Citations

Jun 24, 2017·Critical Reviews in Analytical Chemistry·Heena RekhiAshok Kumar Malik
Feb 27, 2019·Environmental Geochemistry and Health·Ping WangXing-Fen Yang
Dec 23, 2020·Nanomaterials·Ruddy L M MesaGino Picasso

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