Open Access Article
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Retraction: Magnetic solid-phase extraction to preconcentrate ultra trace amounts of lead(II) using modified-carbon nanotubes decorated with NiFe2O4 magnetic nanoparticles
Ali A.
Ensafi
*a,
Sedigheh
Rabiei
a,
Behzad
Rezaei
a and
Ali R.
Allafchian
b
aDepartment of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran. E-mail: Ensafi@cc.iut.ac.ir; Fax: +98-311-3912350; Tel: +98-311-3913269
bNanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Iran
First published on 20th November 2024
Abstract
Retraction of ‘Magnetic solid-phase extraction to preconcentrate ultra trace amounts of lead(II) using modified-carbon nanotubes decorated with NiFe2O4 magnetic nanoparticles’ by Ali A. Ensafi et al., Anal. Methods, 2013, 5, 3903–3908, https://doi.org/10.1039/C3AY40246K.
The Royal Society of Chemistry hereby wholly retracts this Analytical Methods article due to concerns with the reliability of the data.
The SEM image of the modified MWCNTs decorated with NiFe2O4 nanoparticles in Fig. 1 is the same as another SEM image published by the authors in another Analytical Methods paper.1 The authors have not been able to provide a satisfactory reason for how this occurred.
Given the significance of these concerns, the Editor has lost confidence that the findings presented in this paper are reliable.
The authors were informed about the retraction of the article. Ali A. Ensafi has not agreed with the decision, the other authors have not responded.
Signed: Philippa Ross, Executive Editor, Analytical Methods
Date: 4th November 2024
References
1 A. A. Ensafi, F. Saeid, B. Rezaei and A. R. Allafchian, Anal. Methods, 2014, 6, 6885–6892.
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