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Vol. 32 No. 12 (2020): Vol 32 Issue 12, 2020

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Spectrophotometric Determination of Zirconium by Dispersive Liquid-Liquid Microextraction based on Solidification of Floating Organic Droplets

https://doi.org/10.14233/ajchem.2020.22863
Intizam Ahmadov
Academician M.Naghiyev Institute of Catalysis and Inorganic Chemistry of Azerbaijan National Academy of Sciences, AZ1143, H. Javid Street 113, Baku, Republic of Azerbaijan

Corresponding Author(s) : Intizam Ahmadov

intizamahmmedov@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 12 (2020): Vol 32 Issue 12, 2020

Abstract

In this study, a new method was developed for the spectrophotometric determination of zirconium by the procedure of dispersive liquid-liquid microextraction based on the solidification of floating organic droplets (DLLME-SFO). o-Nitrobenzene-azopyrocatechol (o-NBAP) and non-ionic surfactant (OP-10) were used in the complex formation. At the first stage, a separation and solidification processes were carried out, after which the solidified samples were examined by spectrophotometric method. The effect of various parameters viz. pH effect, ion resistance, ligand effect, volume and type of extraction and dispersion solution, extraction time and temperature effect were studied. The results of the experiment were optimized with design programs. The calibration curve was linear ranging from 0.5 to70 μg L-1, with a correlation coefficient of 0.998. The limit of detection (LOD) is 0.12 μg L-1, the limit of quantification (LOQ) is 0.40 μg L-1 and the relative standard deviation (RSD) at 60 μg L-1 is 1.6% (n=6). This method was also applied to determine zirconium in various water samples. The obtained reextraction amount was 98-110%.

Keywords

Dispersive liquid-liquid microextraction Placked Burman Box Behnken
Ahmadov, I. (2020). Spectrophotometric Determination of Zirconium by Dispersive Liquid-Liquid Microextraction based on Solidification of Floating Organic Droplets. Asian Journal of Chemistry, 32(12), 3191–3196. https://doi.org/10.14233/ajchem.2020.22863
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