title: Thermophilic Geobacillus galactosidasius sp. nov. loaded γ-Fe2O3 magnetic nanoparticle for the preconcentrations of Pb and Cd.
abstract: Thermophilic bacteria, Geobacillus galactosidasius sp nov. was loaded on γ-Fe2O3 magnetic nanoparticle for the preconcentrations of Pb and Cd by solid phase extraction before ICP-OES. pH and flow rate of the solution, amounts of biosorbent and magnetic nanoparticle, volume of sample solution, effects of the possible interferic ions were investigated in details. Linear calibration curves were constructed in the concentration ranges of 1.0-60ngmL(-1) for Pb and Cd. The RSDs of the method were lower than 2.8% for Pb and 3.8% for Cd. Certified and standard reference samples of fortified water, wastewater, poplar leaves, and simulated fresh water were used to accurate the method. LOD values were found as 0.07 and 0.06ngmL(-1) respectively for Pb and Cd. The biosorption capacities were found as 34.3mgg(-1) for Pb and 37.1mgg(-1) for Cd. Pb and Cd concentrations in foods were determined. Surface microstructure was investigated by SEM-EDX.
authors.affiliation: Department of Biology, Faculty of Art and Science, Siirt University, 56100 Siirt, Turkey. Electronic address: sadin77@hotmail.com.
authors.forename: Sadin
authors.initials: S
authors.lastname: Özdemir
authors.affiliation: Health Services Vocational High School, Medical Marketing and Promotion Programme, Mardin Artuklu University, 47200 Mardin, Turkey.
authors.forename: Ersin
authors.initials: E
authors.lastname: Kilinç
authors.affiliation: Department of Biology, Faculty of Art and Science, Siirt University, 56100 Siirt, Turkey.
authors.forename: Veysi
authors.initials: V
authors.lastname: Okumuş
authors.affiliation: National Research Council of Italy (C.N.R.), Institute of Biomolecular Chemistry, Via Campi Flegrei, n. 34, 80078 Pozzuoli, Napoli, Italy.
authors.forename: Annarita
authors.initials: A
authors.lastname: Poli
authors.affiliation: National Research Council of Italy (C.N.R.), Institute of Biomolecular Chemistry, Via Campi Flegrei, n. 34, 80078 Pozzuoli, Napoli, Italy.
authors.forename: Barbara
authors.initials: B
authors.lastname: Nicolaus
authors.affiliation: National Research Council of Italy (C.N.R.), Institute of Biomolecular Chemistry, Via Campi Flegrei, n. 34, 80078 Pozzuoli, Napoli, Italy.
authors.forename: Ida
authors.initials: I
authors.lastname: Romano
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000302:isolation & purification*; D005290:Ferric Compounds / Q000737:chemistry*; D056506:Geobacillus / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007854:Lead / Q000302:isolation & purification*; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D059027:Recycling; D012212:Rheology; D052616:Solid Phase Extraction; D012996:Solutions; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D005290:Ferric Compounds; D007477:Ions; D058185:Magnetite Nanoparticles; D012996:Solutions; D014874:Water Pollutants, Chemical; D002104:Cadmium; C000499:ferric oxide; D007854:Lead
keywords: Cd; Geobacillus galactosidasius sp nov; Pb; Preconcentration; Solid phase extraction