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۱Acenaphthenequinone Hydrazone Derivative Based Sol–Gel In Solid–Phase Extraction of Lanthanum (III) in Aqueous
اطلاعات انتشار: World Applied Sciences Journal، بيست و يكم،شماره۳، ۲۰۱۳، سال
تعداد صفحات: ۹
A new hydrazone based–sorbent material with excellent selectivity for lanthanum (III) was prepared by immobilizing the newly synthesized acenaphthenequinone–[N–[(2,4–dinitrophenyl)]–hydrazone (ADH) into sol–gel (SG) matrix. The sorbent material was characterized by FTIR, EDX, SEM, TEM and TGA. The sorption characteristics of a matrix of ten rare earth metal ions (La , Ce , Nd , Sm , Pr , Eu , Dy , 3+ 3+ 3+ 3+ 3+ 3+ 3+ Gd , Er and Yb ) using batch method was studied. Several key parameters that affected the extraction 3+ 3+ 3+ efficiency such as pH, contact time, metal ionsconcentration and SG size were investigated and optimized. The results showed that the sorbent material has a special selectivity and high adsorption capacity for La3+ from aqueous samples. Quantitative recovery of La was achieved by stripping with 0.1M HNO . 3+ 3 The maximum sorption capacity of the sorbent material was 86.43 mgg La .The method has been applied to 1 3+ the determination of lanthanum in different water samples.
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