Assessment of metals bioavailability to vegetables under field conditions using DGT, single extractions and multivariate statistics

Table 6 Varimax rotated factor loadings of experimental variables

Variable	PC1	PC2	PC3	PC4	PC5
Cu AR	0.878	0.086	0.189	0.062	0.226
Zn AR	0.843	−0.018	0.112	0.303	0.115
Cd AR	0.879	0.152	−0.026	0.176	−0.154
Cu HCl	0.824	−0.146	0.184	−0.082	0.251
Zn HCl	0.852	0.059	0.123	0.298	0.149
Cd HCl	0.825	0.239	−0.037	0.235	−0.062
Cu NH₄Cl	0.308	−0.116	0.592	0.090	0.589
Zn NH₄Cl	0.323	−0.117	−0.105	0.736	0.003
Cd NH₄Cl	0.628	0.524	0.000	0.116	−0.241
Cu soln	0.016	−0.153	0.728	0.262	0.235
Zn soln	0.161	−0.022	−0.088	0.800	0.250
Cd soln	0.116	0.749	−0.037	0.310	−0.152
Cu C_E	0.212	−0.293	0.563	0.146	0.529
Zn C_E	0.257	0.058	0.031	0.842	0.160
Cd C_E	0.290	0.801	−0.036	0.126	−0.234
pH	0.353	−0.732	0.051	0.228	0.106
OC	−0.114	−0.170	0.768	0.145	0.203
CEC	0.256	0.106	0.834	−0.088	−0.111
Cu carrot	0.167	0.036	0.661	0.258	0.396
Zn carrot	0.028	0.139	0.235	0.836	−0.039
Cd carrot	0.081	0.882	−0.077	0.027	0.132
Cu onion	0.270	−0.010	0.313	0.348	0.601
Zn onion	0.182	0.180	0.468	0.723	0.103
Cd onion	0.104	0.660	−0.273	0.278	0.275
Cu garlic	0.003	0.203	0.221	0.285	0.715
Zn garlic	0.331	0.193	0.293	0.686	0.193
Cd garlic	0.143	0.770	0.144	−0.033	0.199
Explained variance %	34.2	18.5	11.6	9.4	4.5

ISSN: 2661-801X