In situ formed 1-hexyl-3-methylimidazolium hexafluorophosphate for dispersive liquid-liquid microextraction of Pd(II) prior to electrothermal AAS and spectrophotometry

Authors : Habibollah ESKANDARI

Pages : 631-643

Doi:10.3906/vet-1302-59

View : 15 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :1-Hexyl-3-methylimidazolium hexafluorophosphate was prepared in situ and used as extractant in dispersive liquid-liquid microextraction. Ultra-trace amounts of Pdinsert ignore into journalissuearticles values(II); could be accurately determined by electrothermal atomic absorption spectrometry insert ignore into journalissuearticles values(ETAAS); and spectrophotometry after extraction by the formed micro-droplets of the ionic liquid phase. 1-insert ignore into journalissuearticles values(2-Pyridylazo);-2-naphthol was used to produce a hydrophobic palladium complex prior to extraction. The effects of concentrations of reagents, reaction and extraction times, and the other parameters were investigated and optimized. Beer`s law was obeyed in the ranges of 0.015-0.900 and 1.50-63.0 ng mL-1 Pdinsert ignore into journalissuearticles values(II); by ETAAS and spectrophotometry, respectively. Under the optimized conditions, the limit of detection insert ignore into journalissuearticles values(LOD); by ETAAS was 3 ng L-1 with an enrichment factor of 460. The RSD percent was in the range of 1.3%-4.8% for various standard concentrations of Pdinsert ignore into journalissuearticles values(II); in the range of 0.050-40.0 ng mL-1. Most ions did not interfere. The method was successfully applied to the determination of Pdinsert ignore into journalissuearticles values(II); in some water and alloy samples, jewels, and palladium catalysts.
Keywords : Palladium, dispersive liquid liquid microextraction, 1 2 pyridylazo, 2 naphthol, 1 hexyl 3 methylimidazolium hexafluorophosphate