tailieunhanh - Magnetic solid-phase extraction based on Coriolus versicolor-immobilized γ-Fe2O3 nanoparticles for preconcentration and determination of Al(III) in water and food samples

A method for preconcentration of Al(III) prior to its determination by inductively coupled plasma-optical emission spectrometry (ICP-OES) was developed because the sensitivity of ICP-OES is insufficient for trace-level measurement of Al(III). The method is based on the use of Coriolus versicolor-immobilized γ-Fe2O3 magnetic nanoparticles as a solid phase sorbent. The best experimental conditions were found as pH , mL/min flow rate, 100 mg amount of C. versicolor on 150 mg of γ-Fe2O3 nanoparticles, and 500 mL of sample volume. The Al(III) absorbed on biosorbent was eluted with mL of mol/L HCl. Limit of detection, limit of quantitation, linear range, correlation coefficient, relative standard deviation, and preconcentration factor were achieved as ng/mL, ng/mL, to 20 ng/mL, , 3%, and 100, respectively. |

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