Functionalized polymer sheet sorbent for selective preconcentration and determination of mercury in natural waters

• DOI: 10.1039/c4ay01099j
• Publication Date: 2014-08-21T15:00:34Z
• Authors: Neha Thakur; Sanjukta A. Kumar; Ashok K. Pandey; Sangita D. Kumar; A. V. R. Reddy
• Keywords: Mercury

Mercury is considered as a highly toxic and widespread heavy-metal pollutant. In the present work, two flat-sheet polymer sorbents have been synthesized for selective preconcentration of mercury from natural waters. These are silver nanoparticle (AgNP)-embedded poly(acrylamide)-grafted poly(propylene) sheet (Ag-PAM-PP) 1,8-octanedithiol-functionalized gold-coated (HS-octyl-S-Au-PP). The functional groups acrylamide thiol provide binding sites Hg2+ ions; whereas nanoparticles reduce to Hg0 it held on by amalgam formation. Various factors that influence aqueous solution were investigated. Based comparison experimental results, was observed Ag-PAM-PP had superior performance uptake water samples in terms sorption capacity, kinetics working pH range. Hg2+was found be dependent with maximum 95% at 7.5. large volume used extend lower limit concentration range can quantified EDXRF CV-AAS. sorbed Hg(II) quantitatively detected within 1 min using EDXRF. LOD (3σ) CV-AAS (RSD = 2%) 5%) 6 30 μg L−1, respectively. method applied determination groundwater seawater presence high interfering ions.