Ultrasound-assisted emulsification--solidified floating organic drop microextraction combined with flow injection--flame atomic absorption spectrometry for the determination of palladium in water samples

Authors : Shayessteh DADFARNIA, Ali Mohammad HAJI SHABANI, Mooud AMIRKAVEI

Pages : 746-755

Doi:10.3906/kim-1212-23

View : 16 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The ultrasound-assisted emulsification--solidified floating organic drop microextraction insert ignore into journalissuearticles values(USAE--SFODME); methodology was combined with flow injection--lame atomic absorption spectrometry insert ignore into journalissuearticles values(FI--FAAS); for the separation/pre\-concentration and determination of palladium at ultratrace level. In this method, the palladium ion in the aqueous solution was complexed with acetylacetone insert ignore into journalissuearticles values(6 \times 10-3 mol L-1); in the pH range of 1--7 and was extracted into 40 m L of 1-undecanol, which was sonically dispersed in the aqueous phase. The vial was then centrifuged and cooled in an ice bath for 5 min. The solidified extract was melted and diluted to 100 m L with a solution of hydrochloric insert ignore into journalissuearticles values(1 mol L-1); acid in ethanol, and the concentration of palladium was determined by FI--FAAS. Under the optimum conditions, an enhancement factor of 55 and a good relative standard deviation of \pm 2.1% at 40 m g L-1 were obtained insert ignore into journalissuearticles values(n = 7);. The proposed method was successfully applied to the determination of palladium in different types of water samples. Accuracy was assessed through recovery experiments, independent analysis by furnace atomic absorption spectrometry, and analysis of a certified reference ore by the proposed method.
Keywords : Acetylacetone, palladium, preconcentration separation and determination, solidified floating organic drop microextraction, ultrasound assisted emulsification, flow injection flame atomic absorption spectrometry