Issue

Vol. 26 No. 14 (2014): Vol 26 Issue 14

Copyright (c) 2014 AJC

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Determination of Trace Zinc in Water by Flame Atomic Absorption Spectrometry After Preconcentration by Modified Organobentonite with 1-(2-Pyridylazo)-2-naphthol

https://doi.org/10.14233/ajchem.2014.16871
Ying Wang
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China
Guang Jun Ren
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China
Dong Zhang
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, P.R. China

Corresponding Author(s) : Dong Zhang

sylgdxdong@sina.com

Asian Journal of Chemistry, Vol. 26 No. 14 (2014): Vol 26 Issue 14

Abstract

A new solid-phase extraction method is described for the determination of traces of zinc in water samples by flame atomic absorption spectrophotometry. The method is based on sorption of zinc ion on the 1-(2-pyridylazo)-2-naphthol modified organobentonite (PAN-O-bentonite). And the possible parameters influencing the enrichment and separation were optimized. In the medium of pH 6, the adsorption time was 0.5 h and capacity of adsorption was 3.8 mg/g. The zinc ion adsorbed on the sorbent could be completely eluated by using 5 mL of 1 g/L of EDTA solution. And a novel method for the determination of trace zinc in water by flame atomic absorption spectrometry after preconcentration with PAN-O-bentonite was established. The enrichment factor was more than 100. Under the optimal solid-phase extraction conditions, the method detection limit was 0.031 ug/L with preconcentrated for 100 times. The established method has been successfully applied to analyze well water and tap water sample, the RSD (n = 6) within 2.71 %. The recoveries were in the range of 93.65 to 101.7 %. Compared with other solid phase extraction agent, this method has high sensitivity, better selectivity and lower cost.

Keywords

Organobentonite 1-(2-Pyridylazo)-2-naphthol Zinc Solid-phase extraction Flame atomic absorption spectrometry
Wang, Y., Jun Ren, G., & Zhang, D. (2014). Determination of Trace Zinc in Water by Flame Atomic Absorption Spectrometry After Preconcentration by Modified Organobentonite with 1-(2-Pyridylazo)-2-naphthol. Asian Journal of Chemistry, 26(14), 4442–4444. https://doi.org/10.14233/ajchem.2014.16871
Download Citation
Endnote/Zotero/Mendeley (RIS)
BibTeX
References
  1. State Environmental Protection Administration of China, Analysis Method of Water and Wastewater, China Environmental Science Press, Inc. Beijing, edn 4 (2002).
  2. A. Mellah and D. Benachour, Chem. Eng. Prog., 45, 684 (2006); doi:10.1016/j.cep.2006.02.004.
  3. A. Mellah and D. Benachour, Sep. Purif. Technol., 56, 220 (2007); doi:10.1016/j.seppur.2007.01.037.
  4. M.K. Jha, D. Gupta, P.K. Choubey, V. Kumar, J. Jeong and J. Lee, Sep. Purif. Technol., 122, 119 (2014); doi:10.1016/j.seppur.2013.10.045.
  5. I. Komjarova and R. Blust, Anal. Chim. Acta, 576, 221 (2006); doi:10.1016/j.aca.2006.06.002.
  6. P.E. Franco, M.T. Veit, C.E. Borba, G.C. Gonçalves, M.R. Fagundes-Klen, R. Bergamasco, E.A. da Silva and P.Y.R. Suzaki, Chem. Eng. J., 221, 426 (2013); doi:10.1016/j.cej.2013.02.006.
  7. M. Behbahani, M. Salarian, A. Bagheri, H. Tabani, F. Omidi, A. Fakhari. J. Food Comp. Anal., 34, 81 (2014); doi:10.1016/j.jfca.2013.10.003.
  8. M. Shamsipur, H.R. Rajabi, S.M. Pourmortazavi and M. Roushani, Spectrochim. Acta A, 117, 24 (2014); doi:10.1016/j.saa.2013.07.094.
  9. F. Shakerian, S. Dadfarnia and A.M.H. Shabani, Food Chem., 134, 488 (2012); doi:10.1016/j.foodchem.2012.02.105.
  10. M. Ghaedi, K. Niknam, K. Taheri, H. Hossainian and M. Soylak, Food Chem. Toxicol., 48, 891 (2010); doi:10.1016/j.fct.2009.12.029.
  11. M. Ghaedi, K. Mortazavi, M. Montazerozohori, A. Shokrollahi and M. Soylak, Mater. Sci. Eng. C, 33, 2338 (2013); doi:10.1016/j.msec.2013.01.062.
  12. D. Zhang and P. Hou, Acta Chim. Sin., 67, 1336 (2009).
  13. D. Zhang, X. Guan and H. Gao, Metal. Anal., 28, 38 (2008).
  14. D. Zhang and Y. Cheng, Asian J. Chem., 25, 3172 (2013); doi:10.14233/ajchem.2013.13589.
  15. N. Pourreza, S. Rastegarzadeh and A. Larki, J. Ind. Eng. Chem., 20, 127 (2014); doi:10.1016/j.jiec.2013.04.016.
  16. S.S. Tahir and R. Naseem, Sep. Purif. Technol., 53, 312 (2007); doi:10.1016/j.seppur.2006.08.008.
  17. M. Önal and Y. Sarikaya, Powder Technol., 172, 14 (2007); doi:10.1016/j.powtec.2006.10.034.
  18. V.G. Mihucz, C.J. Done, E. Tatár, I. Virág, G. Záray and E.G. Baiulescu, Talanta, 70, 984 (2006); doi:10.1016/j.talanta.2006.05.080.
  19. D. Zhang and G.S. Zhao, Asian J. Chem., 25, 9739 (2013); doi:10.14233/ajchem.2013.15276.
  20. D. Zhang, L.Z. Xu and G.J. Ren, Phys. Test. Chem. Anal. B, 45, 1163 (2009).
Read More
Author biographies is not available.
Download
PDF
Statistic
Read Counter : 0 Download : 0