Polymeric ion-imprinted nanoparticles for mercury speciation in surface waters
作者： Irina Karadjova , Tanya Yordanova , Ivanka Dakova , Konstantin Balashev
DOI: 10.1016/J.MICROC.2013.11.008
关键词:
摘要: Abstract Selective sorption and enrichment of Hg(II) were achieved by polymeric ion-imprinted nanoparticles, prepared copolymerization methacrylic acid (functional monomer), trimethylolpropane trimethacrylate (cross-linking agent), 2,2′-azo-bis-isobutyronitrile (initiator) complexes with chelating agent 1-pyrrolidinedithiocarboxylic acid. The particles characterized for their morphology, composition structure using AFM, FTIR elemental analysis. Extraction efficiency selectivity ion imprinted sorbent toward studied batch procedures. Two distinct adsorption sites identified on the surface nanoparticles through Scatchard analysis performed. Adsorption process was Langmuir isotherm model. Solid phase extraction procedure developed Hg speciation determination in waters. accuracy proposed scheme confirmed certified reference material. Limits quantification (0.015 μg L − 1 0.02 μg L methylmercury) RSD values (7–12% both species) completely satisfy requirements European legislation monitoring
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