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A magnetic nano-biocomposite based on calcined Ni–Fe layered double hydroxide and chitosan as an adsorbent for cadmium(II) by Hossein Abdolmohammad-Zadeh; Zahra Ayazi; Mahsa Veladi is a Chemistry article available to read on EtoBox.

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A novel magnetic nano-biocomposite (MNBC) was introduced as an adsorbent for a dispersive magnetic solid-phase extraction procedure. The synthesis of the MNBC is based on the co-precipitation of Ni(II) and Fe(III) ions as their hydroxide forms via a simple hydrothermal method, calcination of the obtained Ni-Fe layered double hydroxide, and hybridation of the resultant NiO-NiFe 2 O 4 MNC with chitosan nanoparticles. After prosperous synthesis and characterization of the MNBC, it was applied as an effectual adsorbent for the extraction and pre-concentration of cadmium ions (Cd(II)) from aqueous solutions followed by flame atomic absorption spectrometry detection. The essential factors affecting the extraction recovery were investigated and optimized. According to the method validation, the method's linear dynamic range was from 0.2 to 30 ng mL -1 with a determination coefficient of 0.9996, and the limit of detection was calculated to be 0.02 ng mL -1 . The precision of the method in terms of intra-day and inter-day relative standard deviations (n = 6) with a concentration of 20 ng mL -1 Cd(II) were 1.42% and 2.11%, respectively. The developed method's accuracy was confirmed by analys

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Author

Hossein Abdolmohammad-Zadeh; Zahra Ayazi; Mahsa Veladi

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Chemistry (Physical Sciences)