Vortex-assisted magnetic solid phase extraction of Pb and Cu in some herb samples on magnetic multiwalled carbon nanotubes

Authors : Dilek KAMAS, Aslıhan KARATEPE, Mustafa SOYLAK

Pages : 210-218

View : 25 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This study is the development of a new solid phase extraction method based on using magnetic multiwalled carbon nanotubes impregnated with 1-insert ignore into journalissuearticles values(2-pyridylazo);2-naphthol insert ignore into journalissuearticles values(PAN); for separation, preconcentration, and flame atomic absorption spectrometric determination of Pbinsert ignore into journalissuearticles values(II); and Cuinsert ignore into journalissuearticles values(II);. Optimization of the method was done by investigating pH effect, amount of magnetic multiwalled carbon nanotubes impregnated with PAN, eluent type and volume, matrix effects, and volume of the sample. The optimum adsorbent amount was found to be 75 mg and the optimum pH value was found as 5.5. The detection limits were 16.6 mu g L-1 for Pbinsert ignore into journalissuearticles values(II); and 18.9 mu g L-1 for Cuinsert ignore into journalissuearticles values(II);. The relative standard deviations insert ignore into journalissuearticles values(RSD%); were less than 4%. Two certified reference materials: SPS-WW2 wastewater and NCS-DC73349 insert ignore into journalissuearticles values(bush branches and leaves); were used to test the validation of the method. The method was successfully applied to the analysis of Pbinsert ignore into journalissuearticles values(II); and Cuinsert ignore into journalissuearticles values(II); ions in daisy, mint, paprika, sage, rosemary, daphne leaves, heather, green tea, and Viburnum opulus samples.
Keywords : Magnetic solid phase extraction, multiwalled carbon nanotubes, preconcentration, flame atomic absorption spectrometry, copper, lead