On-line separation and preconcentration of lead (II) by solid-phase extraction using activated carbon loaded with xylenol orange and its determination by flame atomic absorption spectrometry

Authors: Ali A Ensafi, A Zendegi Shiraz

Publication date: 2008/2/11

Journal name: Journal of hazardous materials

Volume: 50

Pages: 554-559

Publisher: Elsevier

Activated carbon loaded with xylenol orange in a mini-column was used for the highly
selective separation and preconcentration of Pb (II) ions. An on-line system for enrichment
and the determination of Pb (II) was carried out on flame atomic absorption spectrometry.
The conditions of preconcentration and quantitative recovery of Pb (II) from diluted solution,
such as pH of aqueous phase, amount of the sorbent, volume of the solutions and flow
variables were studied as well as effect of potential interfering ions. Under the optimum ...