Synthesis, characterization and theoretical investigation of magnetite nanoclay modified as a new nanocomposite for simultaneous preconcentration of lead and nickel prior to ETAAS determination

Aguado, 2009, Aqueous heavy metals removal by adsorption on amine-functionalized mesoporous silica, J. Hazard. Mater., 163, 213, 10.1016/j.jhazmat.2008.06.080 Al-Sid-Cheikh, 2015, A robust method using online steric exclusion chromatography-UV-ICPMS to investigate nanoparticle fate and behavior in environmental samples, Anal. Chem., 87, 10346, 10.1021/acs.analchem.5b02413 Amjadi, 2015, A composite prepared from halloysite nanotubes and magnetite (Fe3O4) as a new magnetic sorbent for the preconcentration of cadmium (II) prior to its determination by flame atomic absorption spectrometry, Microchim. Acta, 182, 1627, 10.1007/s00604-015-1491-y Ballesteros-Gómez, 2009, Hemimicelles of alkyl carboxylates chemisorbed onto magnetic nanoparticles: study and application to the extraction of carcinogenic polycyclic aromatic hydrocarbons in environmental water samples, Anal. Chem., 81, 9012, 10.1021/ac9016264 Brocorens, 2008, Microscopic morphology of chlorinated polyethylene-based nanocomposites synthesized from poly (ε-caprolactone)/clay masterbatches, Langmuir, 24, 2072, 10.1021/la702822d Candir, 2008, Ligandless cloud point extraction of Cr (III), Pb (II), Cu (II), Ni (II), Bi (III), and Cd (II) ions in environmental samples with Tween 80 and flame atomic absorption spectrometric determination, Talanta, 77, 289, 10.1016/j.talanta.2008.06.024 Daenzer, 2015, Oxidation of ferrous sulfate hydrolyzed Slurry—kinetic aspects and impact on As (V) removal, Ind. Eng. Chem. Res., 54, 1738, 10.1021/ie503976k El-Toni, 2014, Simple and facile synthesis of amino functionalized hollow core–mesoporous shell silica spheres using anionic surfactant for Pb (II), Cd (II), and Zn (II) adsorption and recovery, Chem. Eng. J., 251, 441, 10.1016/j.cej.2014.04.072 Frisch, 2003 Golshekan, 2013, Nano magnetic solid phase extraction for preconcentration of lead ions in environmental samples by a newly synthesized reagent, Acta Chim. Slovenica, 60, 358 Hutchison, 1985, Surface profile imaging of spinel catalyst particles, Ultramicroscopy, 18, 435, 10.1016/0304-3991(85)90162-7 Kadirvelu, 2000, Removal of Cu (II), Pb (II), and Ni (II) by adsorption onto activated carbon cloths, Langmuir, 16, 8404, 10.1021/la0004810 Kocot, 2012, Dispersive liquid–liquid microextraction using diethyldithiocarbamate as a chelating agent and the dried-spot technique for the determination of Fe, Co, Ni, Cu, Zn, Se and Pb by energy-dispersive X-ray fluorescence spectrometry, Spectrochim. Acta Part B Atomic Spectrosc., 73, 79, 10.1016/j.sab.2012.05.003 Manzoori, 2004, Development of a cloud point extraction and preconcentration method for Cd and Ni prior to flame atomic absorption spectrometric determination, Anal. Chim. Acta, 521, 173, 10.1016/j.aca.2004.06.049 Mashhadizadeh, 2014, Solid phase extraction of trace amounts of silver, cadmium, copper, mercury, and lead in various food samples based on ethylene glycol bis-mercaptoacetate modified 3-(trimethoxysilyl)-1-propanethiol coated Fe3O4 nanoparticles, Food Chem., 151, 300, 10.1016/j.foodchem.2013.11.082 Mohammadi, 2016, Preconcentration of cadmium and copper ions on magnetic core–shell nanoparticles for determination by flame atomic absorption, Toxicol. Environ. Chem., 1, 10.1080/02772248.2015.1134530 Naghizadeh, 2015, Simultaneous preconcentration of bismuth and lead ions on modified magnetic core–shell nanoparticles and their determination by ETAAS, Chem. Eng. J., 281, 444, 10.1016/j.cej.2015.07.014 Nakato, 2009, Photoinduced charge separation in a colloidal system of exfoliated layered semiconductor controlled by coexisting aluminosilicate clay, J. Phys. Chem. B, 113, 1323, 10.1021/jp807214w Rao, 2006, Solid phase extraction of Cd, Cu, and Ni from leafy vegetables and plant leaves using amberlite XAD-2 functionalized with 2-hydroxy-acetophenone-thiosemicarbazone (HAPTSC) and determination by inductively coupled plasma atomic emission spectroscopy, J. Agric. Food Chem., 54, 2868, 10.1021/jf0600049 Shamspur, 2005, Flame atomic absorption spectroscopy (FAAS) determination of iron (III) after preconcentration on to modified analcime zeolite with 5-((4-nitrophenylazo)-N-(2′, 4′-dimethoxyphenyl)) salicylaldimine by column method, J. Anal. At. Spectrom., 20, 476, 10.1039/B416097E Silva, 2009, A new organofunctionalized silica containing thioglycolic acid incorporated for divalent cations removal—a thermodyamic cation/basic center interaction, Collids Surf. A, 332, 144, 10.1016/j.colsurfa.2008.09.010 Su, 2014, Single crystalline Co3O4 nanocrystals exposed with different crystal planes for Li-o2 batteries, Sci. Rep., 4, 10.1038/srep05767 Tang, 2014, Automated dispersive solid-phase extraction using dissolvable Fe3O4-layered double hydroxide core–shell microspheres as sorbent, Anal. Chem., 86, 11070, 10.1021/ac503323e Tsipursky, 1984, The distribution of octahedral cations in the 2: 1 layers of dioctahedral smectites studied by oblique-texture electron diffraction, Clay Miner., 19, 177, 10.1180/claymin.1984.019.2.05 Tuzen, 2005, Multi-element pre-concentration of heavy metal ions by solid phase extraction on Chromosorb 108, Anal. Chim. Acta, 548, 101, 10.1016/j.aca.2005.06.005 Wang, 2013, A comparison of new Gemini surfactant modified clay with its monomer modified one: characterization and application in methyl orange removal, J. Chem. Eng. Data, 58, 1760, 10.1021/je400164e Yu, 2013, Facet-dependent electrochemical properties of Co3O4 nanocrystals toward heavy metal ions, Sci. Rep., 3, 10.1038/srep02886 Zhang, 2010, Chitosan-coated octadecyl-functionalized magnetite nanoparticles: preparation and application in extraction of trace pollutants from environmental water samples, Anal. Chem., 82, 2363, 10.1021/ac902589t