A novel silicone phthalocyanine for the preconcentration and spectrophotometric determination of copper by ionic liquid-based dispersive liquid-liquid microextraction

Authors : Yasemin ÇAĞLAR, Ece Tugba SAKA
Pages : 0-0
View : 48 | Download : 10
Publication Date : 2019-12-11
Article Type : Research Paper
Abstract :Dispersive liquid-liquid microextraction insert ignore into journalissuearticles values(DLLME); has become a very popular environmentally benign sample preparation technique, due to its simplicity, speed of operation and low consumption of solvent and reagent. It has attracted much interest from scientists working in separation science, and much improvement has been made since its introduction in 2006. This work reports the development of a new simple ionic liquid based dispersive liquid-liquid microextraction insert ignore into journalissuearticles values(IL-DLLME); method for spectrophotometric copper determination. First, the copper was complexed with a novel silicone phthalocyanine and than the complex was extracted into 1-heptyl-3-methylimidazolium hexafluorophosphate dissolving in acetone in the presence of sodium dodecyl sulphate insert ignore into journalissuearticles values(SDS); as the anti-sticking agent. After centrifuging for 2 min at 3000 rpm, the extracting phase was diluted to 250 µL with acetone for spectrophtometric detection at 340 nm. Some experimental conditions that influence the procedure were optimized. The pH and complexing reagent concentration are 4.0 and 4.6x10 -6 molL -1 , respectively. The method is linear in the range from 0.03 to 100 µ g/mL with a correlation coefficient insert ignore into journalissuearticles values(R 2 ); of 0.9973. The limit of detection insert ignore into journalissuearticles values(LOD); of method is 0.017 µ g/mL. The relative standard deviation is 1.7% at 45 µg/mL Cu 2+ insert ignore into journalissuearticles values(n=6);.  The enrichment factor for the method was calculated as 210.
Keywords : Dispersive liquid liquid microextraction, Silicone phthalocyanine, Cu preconcentration, Ionic liquids, Spectrophotometry

ORIGINAL ARTICLE URL