“…Many methods are available to determine the reaction stoichiometry, such as slope analysis (Liu et al, 2014), loading capacity and loading test (Talebi et al, 2015), continuous variation method (Job's method) (Baba et al, 2012), ligand number method (Rydberg et al, 2004), numerical method (Chang et al, 2011), volumetric method (Pisarello et al, 2010) and infrared spectroscopy (Bidari et al, 2014). Out of those prominent methods, slope analysis, loading test and Job's method which consists of an experimental approach.…”