Magnetic dispersive solid phase extraction of lead(II) as dithizone chelates in food and environmental samples on Fe₃O₄@XAD-8 prior to its flame atomic absorption spectrometric detection

ABSTRACT

A magnetic dispersive solid phase extraction method has been developed using Fe₃O₄@XAD-8 adsorbent to separate and preconcentrate Pb (II) ions as dithizone chelates from environmental samples. Fe₃O₄@XAD-8 was characterised by SEM, FT-IR and BET methods. Analytical parameters such as pH, adsorbent amount, ligand volume, eluent type and volume, model solution volume and matrix effects which are effective on method recovery are optimised. Limit of detection (LOD) and limit of quantification (LOQ) values were 0.048 µg mL⁻¹ and 0.159 µg mL⁻¹, respectively. The accuracy of the developed method has been proven by TMDA – 64.2 certified reference material and addition-recovery studies in water samples. Lead content of some food and water samples was determined by using the developed dispersive magnetic solid-phase extraction method.

KEYWORDS:

• Separation
• preconcentration
• magnetic dispersive solid phase extraction
• Fe₃o₄@XAD-8
• atomic absorption spectrometry

Acknowledgments

Sayed Nasrullah Shah is a very grateful thank to the Scientific and Technological Research Council of Turkey (TUBITAK) (2221 (visiting researcher (Postdoctoral fellow)) Research FellowshipProgramme for Foreign Citizens).The authors are also grateful for the financial support of the Unit of the Scientific Research Projects of Erciyes University (FBG-2020-10013)(Kayseri, Turkey).

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the tubitak [2221].