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Paper Information

Journal:   JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)   fall 2018 , Volume 12 , Number 3 ; Page(s) 145 To 155.

Determination of palladium based on micro-funnel and magnetic stirring assisted displacement liquid-phase microextraction method and optimization using response surface methodology

Author(s):  Ahmadi Negar, RAMEZANI MAJID*
* Department of Chemistry, Arak azad University, Arak, Iran
In this research, a simple and effective method was developed for pre-concentration and determination of palladium ion, based on displacement with Cu(DDTC)2 complex in aqueous samples. This method involves two steps. First, Cu2+ reacts with diethyldithiocarbamate to form Cu(DDTC)2 complex, which is extracted by microfunnel-supported liquid phase microextraction method using n-octanol as extraction solvent. Next, Cu2+ was replaced with Pd2+ to form Pd(DDTC)2 in the organic phase and then was measured using flame atomic absorption spectrometry. In order to optimize effective parameters, Box-Behnken design methods were used. Under optimized conditions, enhancement factor (EF), limit of detection (LOD), and relative standard deviation (RSD) (n=8) were obtained 153, 1. 22 μ g. l-1 and 4. 9%, respectively. Finally, this method was successfully used to determine Pd in water samples.
Keyword(s): Displacement Liquid-phase microextraction,Micro-funnel,Palladium,Response Surface Design,Water Samples
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