Journal
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
Volume 17, Issue 1, Pages 167-176Publisher
SPRINGER
DOI: 10.1007/s13738-019-01753-9
Keywords
Multivariate optimization; Palladium; Syringe-to-syringe displacement-assisted dispersive liquid-phase microextraction; Environmental water and soil samples
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We introduce a syringe-to-syringe displacement-assisted dispersive liquid-phase microextraction to the separation and preconcentration of trace Pd(II) amounts in different environmental samples. In this method, the Pd was replaced copper from its diethyldithiocarbamate complex and extracted into 1-octanol serving as the extraction solvent and analyzed by flame atomic absorption spectrometry. The multivariate strategy was utilized to screen the various variables and evaluate the optimal conditions of this microextraction method. The effective parameters such as microextraction solvent type, pH adjustment, number of injections, concentration of Cu(II), salt effect and time for centrifugation were investigated. Parameters such as linear range, detection limit, relative standard deviation and enrichment factor for Pd(II) were found to be 5.0-500.0 mu g L-1, 1.32 mu g L-1, 2.9% and 87.7, respectively. The proposed system was applied to the Pd(II) determination in various environmental samples as water and soil.
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