title: Bovine serum albumin-Cu(II) hybrid nanoflowers: An effective adsorbent for solid phase extraction and slurry sampling flame atomic absorption spectrometric analysis of cadmium and lead in water, hair, food and cigarette samples.
abstract: Herein, the synthesis of bovine serum albumin-Cu(II) hybrid nanoflowers (BSA-NFs) through the building blocks of bovine serum albumin (BSA) and copper(II) ions in phosphate buffered saline (PBS) and their use as adsorbent for cadmium and lead ions are reported. The BSA-NFs, for the first time, were efficiently utilized as novel adsorbent for solid phase extraction (SPE) of cadmium and lead ions in water, food, cigarette and hair samples. The method is based on the separation and pre-concentration of Cd(II) and Pb(II) by BSA-NFs prior to determination by slurry analysis via flame atomic absorption spectrometry (FAAS). The analytes were adsorbed on BSA-NFs under the vortex mixing and then the ion-loaded slurry was separated and directly introduced into the flame AAS nebulizer by using a hand-made micro sample introduction system to eliminate a number of drawbacks. The effects of analytical key parameters, such as pH, amount of BSA-NFs, vortexing time, sample volume, and matrix effect of foreign ions on adsorbing of Cd(II) and Pb(II) were systematically investigated and optimized. The limits of detection (LODs) for Cd(II) and Pb(II) were calculated as 0.37 μg L(-)(1) and 8.8 μg L(-)(1), respectively. The relative standard deviation percentages (RSDs) (N = 5) for Cd(II) and Pb(II) were 7.2%, and 5.0%, respectively. The accuracy of the developed procedure was validated by the analysis of certified reference materials (TMDA-53.3 Fortified Water, TMDA-70 Fortified Water, SPS-WW2 Waste Water, NCSDC-73349 Bush Branches and Leaves) and by addition/recovery analysis. The quantitative recoveries were obtained for the analysis of certified reference materials and addition/recovery tests. The method was successfully applied to the analysis of cadmium and lead in water, food, cigarette and hair samples.
authors.affiliation: Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey.
authors.forename: Erkan
authors.initials: E
authors.lastname: Yilmaz
authors.affiliation: Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri 38039, Turkey; Nanotechnology Research Center (ERNAM), Erciyes University, Kayseri 38039, Turkey.
authors.forename: Ismail
authors.initials: I
authors.lastname: Ocsoy
authors.affiliation: Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey.
authors.forename: Nalan
authors.initials: N
authors.lastname: Ozdemir
authors.affiliation: Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri 38039, Turkey. Electronic address: soylak@erciyes.edu.tr.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000032:analysis*; D003300:Copper / Q000737:chemistry*; D004781:Environmental Exposure; D005504:Food Analysis; D006197:Hair / Q000737:chemistry; D006801:Humans; D007854:Lead / Q000032:analysis*; D049329:Nanostructures; D012710:Serum Albumin, Bovine / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014026:Nicotiana / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D014874:Water Pollutants, Chemical; D002104:Cadmium; D012710:Serum Albumin, Bovine; D007854:Lead; D003300:Copper
keywords: Bovine serum albumin-Cu(II) hybrid nanoflowers; Cadmium; Flame atomic absorption spectrometry; Lead; Slurry sampling; Solid phase extraction