Retraction: Magnetic solid-phase extraction to preconcentrate ultra trace amounts of lead(ii) using modified-carbon nanotubes decorated with NiFe2O4 magnetic nanoparticles
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.