Combined hollow fiber-based liquid–liquid–liquid microextraction and in-situ differential pulse voltammetry to improve selectivity, sensitivity, and interference elimination in electrochemical analysis

Authors: Mohammad Saraji, Bahman Farajmand, Ali A Ensafi, Ali R Allafchian, Zohreh Mirahmdi Zare

Publication date: 2010/9/15

Journal name: Talanta

Volume: 82

Pages: 1588-1593

Publisher: Elsevier

In this paper, a combined hollow fiber-based liquid three-phase microextraction and
voltammetric method are applied for the first time as a highly selective and sensitive method
of electrochemical analysis. Desipramine, used as a model compound was extracted from
8mL aqueous solution (donor phase, 0.10 molL− 1 NaOH) through a thin phase of propyl
benzoate inside the pores of a polypropylene hollow fiber and finally into a 10μL acidic
acceptor solution inside the hollow fiber. Three microelectrodes designed and constructed ...