Optimization of a new cloud point extraction procedure for the selective determination of trace amounts of total iron in some environmental samples

Authors : Celal DURAN, Duygu ÖZDEŞ, Elif Çelenk KAYA, Halit KANTEKİN

Pages : 445-456

Doi:10.3906/sag-1301-71

View : 14 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A new, simple, and rapid cloud point extraction insert ignore into journalissuearticles values(CPE); procedure system, combined with flame atomic absorption spectrometry insert ignore into journalissuearticles values(FAAS);, was developed for selective separation, preconcentration, and determination of trace amounts of total iron in some environmental samples. The complexing agent, N,N`-insert ignore into journalissuearticles values(2,2`-insert ignore into journalissuearticles values(ethane-1,2-diylbisinsert ignore into journalissuearticles values(oxy);); bisinsert ignore into journalissuearticles values(ethane-2,1-diyl););bisinsert ignore into journalissuearticles values(2-chloroacetamide); insert ignore into journalissuearticles values(EDBOCA);, is selective at pH 5.0 for only Feinsert ignore into journalissuearticles values(II); and Feinsert ignore into journalissuearticles values(III); ions in the presence of Cuinsert ignore into journalissuearticles values(II);, Pbinsert ignore into journalissuearticles values(II);, Cdinsert ignore into journalissuearticles values(II);, Mninsert ignore into journalissuearticles values(II);, Coinsert ignore into journalissuearticles values(II);, Crinsert ignore into journalissuearticles values(III);, Crinsert ignore into journalissuearticles values(VI);, Niinsert ignore into journalissuearticles values(II);, Zninsert ignore into journalissuearticles values(II);, Alinsert ignore into journalissuearticles values(III);, Moinsert ignore into journalissuearticles values(VI);, Pdinsert ignore into journalissuearticles values(II);, Ptinsert ignore into journalissuearticles values(IV);, Auinsert ignore into journalissuearticles values(III);, and Vinsert ignore into journalissuearticles values(V); ions. The procedure is based on the complexation of Feinsert ignore into journalissuearticles values(III); ions with EDBOCA reagent in the presence of Triton X-114 insert ignore into journalissuearticles values(TX-114); as a non-ionic surfactant. The optimum conditions for the CPE of Feinsert ignore into journalissuearticles values(III); ions were investigated with respect to several experimental parameters such as pH of the solution, TX-114 and EDBOCA concentrations, incubation time and temperature, and centrifugation rate and time. The detection limit for Feinsert ignore into journalissuearticles values(III); ions based on the 3 times the standard deviation of the blanks insert ignore into journalissuearticles values(N:10); was found to be 1.22 m g L-1, while the relative standard deviation insert ignore into journalissuearticles values(RSD); was 4.2%. Environment Canada TM-25.3 and CRM-SA-C Sandy Soil C, as certified reference materials, were used, and spike tests were applied to validate the method. The method was applied to some real environmental samples to evaluate their total iron levels.
Keywords : Preconcentration, cloud point extraction, iron, flame atomic absorption spectrometry, Triton X 114