MWCNT/nano-ZrO2 as a new solid phase extractor: its synthesis, characterization, and application to atomic absorption spectrometric determination of lead

Authors : Orhan Murat KALFA, Özcan YALÇINKAYA, Ali Rehber TÜRKER

Pages : 885-898

Doi:10.3906/vet-1303-3

View : 27 | Download : 8

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Nanoscale ZrO2 was synthesized on a multiwall carbon nanotube insert ignore into journalissuearticles values(MWCNT); and designed as a new solid phase extractor for metal ion preconcentration. The characterization of the synthesized material was achieved by transmission electron microscope insert ignore into journalissuearticles values(TEM); and X-ray diffraction insert ignore into journalissuearticles values(XRD);. Then the new nanoscale material was applied to preconcentration of leadinsert ignore into journalissuearticles values(II); from various matrices. Different experimental factors including pH of the sample solution, sample volume, flow rate of the sample solution, and volume and concentration of the eluent for the preconcentration step were examined. The effect of interfering ions on the recovery of the leadinsert ignore into journalissuearticles values(II); was also investigated. The recovery of leadinsert ignore into journalissuearticles values(II); under the optimum conditions was found to be 104 \pm 2% at 95% confidence level. The preconcentration factor was 30 when 150 mL of sample solution and 5 mL of eluent were used. The analytical detection limit for Pbinsert ignore into journalissuearticles values(II); was 0.80 m g L-1 after preconcentration. The adsorption capacity of the new nanosorbent was 115 mg g-1. The accuracy of the method was confirmed by analyzing standard reference materials insert ignore into journalissuearticles values(Silty Clay 7003);. The results demonstrated good agreement with the certified values. The method was applied for the determination of lead in tap water and clay samples.
Keywords : Preconcentration, lead, nanosorbent, atomic absorption spectrometry, multiwalled carbon nanotube, zirconium dioxide