کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
679384 1459942 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermophilic Geobacillus galactosidasius sp. nov. loaded γ-Fe2O3 magnetic nanoparticle for the preconcentrations of Pb and Cd
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Thermophilic Geobacillus galactosidasius sp. nov. loaded γ-Fe2O3 magnetic nanoparticle for the preconcentrations of Pb and Cd
چکیده انگلیسی


• Thermophilic bacteria, Geobacillus galactosidasius sp nov. was used as biosorbent.
• It was loaded on γ-Fe2O3 magnetic nanoparticle.
• Pb and Cd were preconcentrated.
• The method was validated through the analysis of certified and standard sample.
• SEM–EDX was employed for investigations of surface morphology.

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 1.0–60 ng mL−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 0.06 ng mL−1 respectively for Pb and Cd. The biosorption capacities were found as 34.3 mg g−1 for Pb and 37.1 mg g−1 for Cd. Pb and Cd concentrations in foods were determined. Surface microstructure was investigated by SEM–EDX.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 201, February 2016, Pages 269–275
نویسندگان
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