Level of Heavy Metals and Potential Ecological Risks in Irrigated Horticultural Farms in the Vicinity of Lake Ziway, Central Ethiopian Rift Valley Region

Table 9

Principal component loading of heavy metals.

Heavy metals	PC1	PC2
As	0.984	0.125
Pb	0.167	0.949
Zn	0.913	0.291
Cd	0.947	0.297
Hg	0.924	−0.099
Cu	0.012	0.808
Ni	0.966	0.220
Co	0.419	0.856
Cr	0.868	0.458
% variance	62.1	18.9

Bold values show strong significant positive relationship.