Analysis of the Concentration of Heavy Metals in Khat Grown in Meru County and the Assessment of Their Associated Health Risks

Table 6

Pearson correlation matrix obtained for five heavy metals.

	Ni	Cu	Fe	Cd	Pb	Cr
Ni	1
Cu	−0.181	1
Fe	0.565	0.168	1
Cd	−0.221	−0.264	−0.131	1
Pb	−0.411	0.293	0.294	0.216	1
Cr	0.707	0.080	0.495	−0.258	−0.320	1