Table 5. Mann–Kendall trend test data for correlation between reaction time (min) and core size (nm), hydrodynamic diameter (nm), zeta-potential (mV) and polydispersity index (PDI).

Parameter	Core size (nm)	Hydrodynamic diameter (nm)	Zeta potential (mV)	Polydispersity index (PDI)
Kendall's tau	−0.080	−0.030	0.041	−0.050
S	−45	−2	7	−6
Var (S)	4548.333	212.667	815.000	493.333
p -Value (two-tailed)	0.514	0.945	0.834	0.822
α	0.05	0.05	0.05	0.05