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Vortex-assisted magnetic dispersive solid phase extraction using Tanacetum extract followed by dispersive liquid–liquid microextraction for the extraction and preconcentration of Co(II) and Ni(II) from high volume of water samples

Saeed Mohammad Sorouraddin, Mir Ali Farajzadeh, and Sahra Khosroshahian

Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran



Received: 26 March 2022  Accepted: 24 June 2022


In this study, for the first time, an efficient magnetic sorbent has been prepared using the extract of Tanacetum leaves and used in magnetic dispersive solid phase extraction of Co(II) and Ni(II) ions from a high volume of water samples. For this purpose, first the environmentally friendly and economically affordable magnetic sorbent using the extract of Tanacetum leaves was synthesized. It was added into an aqueous sample and dispersed by vortexing. Then, the sorbent particles were collected from the aqueous solution by a magnetic field, and the adsorbed analytes were washed by methanol. To achieve low detection limits, they were preconcentrated by the following dispersive liquid–liquid microextraction. The enriched analytes were monitored by flame atomic absorption spectrometry. The important parameters such as the sorbent weight, nature and volume of elution and extraction solvents, pH, vortex time, and ionic strength were studied. Under optimized conditions, the proposed method showed linear ranges of 0.20–40 and 0.20–30 µg L−1 for Co(II) and Ni(II) ions, respectively. Limits of detection were obtained 0.07 and 0.09 µg L−1 for Co(II) and Ni(II), respectively. The suggested procedure was also successfully used for the extraction of the selected heavy metal ions in various environmental water samples.

Keywords: Magnetic dispersive solid phase extraction; Dispersive liquid–liquid microextraction; Flame atomic absorption spectrometry; Tanacetum; Heavy metal cations; Water analysis

Full paper is available at

DOI: 10.1007/s11696-022-02354-2


Chemical Papers 76 (11) 7177–7188 (2022)

Wednesday, June 26, 2024

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