Adsorption and deposition-assisted anodic stripping voltammetry for determination of antimony(III) in presence of HEMATOXYLIN (cas 1412-19-7) on glassy carbon electrode

Add time:09/28/2019    Source:sciencedirect.com

A validated simple, reliable and sensitive adsorptive anodic stripping voltammetric procedure is suggested for the accurate determination of antimony(III) on a glassy carbon electrode (GCE) in the presence of HEMATOXYLIN (cas 1412-19-7) (HT), used as a chemical receptor in antimony analysis for the first time. Under optimized conditions, the plot of stripping peak current versus Sb(III) concentration showed two dynamic linear ranges, 1.0×10−4 – 0.01 µm (R2 =0.9986) and 0.01 – 1.0 µm (R2 =0.9973) with a detection limit of 9.5×10–11 mol L−1 (11.57 ng L−1). The RSD values of intra-day precision and inter-day precision (n =5) for 5.0×10−7 mol L−1 Sb(III) were calculated as 1.63% and 2.27%, respectively, indicating that the proposed method has a good precision. Recoveries for Sb(III) in water samples were found to be between 97% and 102% for the 5.0×10−7 mol L−1 Sb(III), proving the reliability and accuracy of the method proposed.

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