Separation and Preconcentration of Trace Amounts of Nickel from Aqueous Samples

Rahnama, Reyhaneh; Nabipour Sangroodi, Maedeh

doi:10.22093/wwj.2017.47039.2118

Separation and Preconcentration of Trace Amounts of Nickel from Aqueous Samples

Document Type : Research Paper

Authors

¹ Assist. Prof., Payam-e-Noor University, Departement of Chemistry, Tehran, Iran

² MSc Student, Payam-e-Noor University, Departement of Chemistry, Tehran, Iran

10.22093/wwj.2017.47039.2118

Abstract

In this paper, a new method for preconcentration and measurement of trace amounts of nickel in aqueous samples by magnetic solid phase extraction (MSPE) via magnetic carbon nanotubes (Mag-CNTs) was developed. In order to increase selectivity, α-Furildioxime was used as chelating agent. In order to do extraction, optimum amount of ligand was added to the nickel sample and pH was set on 9, then 7 ml. of adsorbent was added and stirred for 15 minutes. After that, aqueous phase and adsorbent were separated by a strong magnet. Finally, the absorption was measured via flame atomic absorption spectrometry by analyte elution from the absorbent with an appropriate solution. Parameters affecting the extraction and preconcentration of nickel were investigated and optimized. Under optimum conditions, the calibration curve was linear in concentration range from 2.5 to 375 µg L-1 and the detection limit was 0.8 µg L-1 of nickel. The method was applied for determination of nickel in aqueous samples. The relative efficiency values of nickel measurement in aqueous samples were from 98.7% to 102.1%. Results indicated that Mag-CNTs can be used as an effective and inexpensive absorbent for preconcentration and extraction of nickel from actual samples.

Keywords

Main Subjects

urban

References

Afzali, D., Jandaghi, N. & Taher, M. A., 2011, "Flame atomic absorption spectrometric determination trace amounts of nickel in water samples after solid-phase extraction and preconcentration onto IR-120 amberlite resin modified with 5-4-dimethyl amino-benzylidene) rhodamin", J. Chil. Chem. Soc., 56, 591-594

Dadfarnia, Sh., Haji Shabani, A.M., Shirani Bidabadi, M. & Jafari, A.A., 2010, "A novel ionic liquid/micro-volume back extraction procedure combined with flame atomic absorption spectrometry for determination of trace nickel in samples of nutritional interest", Journal of Hazardous Materials, 173, 534-538

Dean, J.A. & Rains, T.C., 1975, Flame emission and atomic absorption spectrometry, Marcel Dekker, New York.

Divrikli, U., Kartal, A.A., Soylak, M. & Elci, L., 2007, "Preconcentration of Pb(II), Cr(III), Cu(II), Ni(II) and Cd(II) ions in environmental samples by membrane filtration prior to their flame atomic absorption spectrometric determinations", Journal of Hazardous Materials, 145, 459-464

Ghaedi, M., Ahmadi, F. & Soylak, M., 2007, "Preconcentration and separation of nickel, copper and cobalt using solid phase extraction and their determination in some real samples", Journal of Hazardous Materials, 147, 226-231.

Leong, M. I. & Huang, S. D., 2008 "Dispersive liquid–liquid microextraction method based on solidification of floating organic drop combined with gas chromatography with electron-capture or mass spectrometry detection", Journal of Chromatogrphy A, 1211, 8-12.

Nordberg, G. F., Fowler, B. A., Nordberg, M. & Friberg, L. T., 2007, Handbook on the toxicology of metals, 3^rd Ed., Academic Press Inc., Waltham, MA, USA.

Nunes, J. A., Batista, B. L., Rodrigues, J. L., Caldas, N. M., Neto, J. A. & Barbosa, F. Jr., 2010, "A simple method based on ICP-MS for estimation of background levels of arsenic, cadmium, copper, manganese, nickel, lead, and selenium in blood of the Brazilian population", Journal of Toxicology & Environmental Health A, 73, 878-887.

Pourreza, N., Zolgharnein, J., Kiasat, A. R. & Dastyar, T., 2010, "Silica gel–polyethylene glycol as a new adsorbent for solid phase extraction of cobalt and nickel and determination by flame atomic absorption spectrometry", Talanta, 81, 773-777.

Sahin, C.A., Efecinar, M. & Satiroglu, N., 2010, "Combination of cloud point extraction and flame atomic absorption spectrometry for preconcentration and determination of nickel and manganese ions in water and food samples", Journal of Hazardous Materials, 176, 672-677.

Soylak, M. & Aydin, A., 2011, "Determination of some heavy metals in food and environmental samples by flame atomic absorption spectrometry after coprecipitation", Food Chem. Toxicol., 49, 1242-1248.