[Retracted] Ternary Complexation Process for New Spectrophotometric Assay of Levodopa using Ni(II) and 2,3-Diaminopyridine

<div>Calibration graph of LD determination using the proposed procedure.</div>

Advances in Materials Science and Engineering

Figure 7: [Retracted] Ternary Complexation Process for New Spectrophotometric Assay of Levodopa using Ni(II) and 2,3-Diaminopyridine 