Estimation of Copper and Cadmium Bioavailability in Contaminated Soil Remediated by Different Plants and Micron Hydroxyapatite

Table 4

Correlation coefficients among soil properties, Cu and Cd bioavailability, and remediation efficiency.

	pH	SOC	T-N	A-N	T-P	A-P	T-K	A-K	CEC	T-Cu	T-Cd	C-Cu	C-Cd	D-Cu	D-Cd	Biomass	P-Cu	P-Cd	A-Cu	A-Cd
PH	1.00
SOC	0.484	1.00
T-N	0.559	0.295	1.00
A-N	0.152	−0.0410	0.383	1.00
T-P	0.699	0.396	0.580	−0.0430	1.00
A-P	0.689	0.470	0.270	−0.121	0.691	1.00
T-K	0.488	0.154	0.633	0.428	0.505	0.0690	1.00
A-K	0.654	0.180	0.529	0.268	0.674	0.284	0.804	1.00
CEC	0.225	0.162	0.0310	−0.0510	−0.146	0.110	−0.152	−0.106	1.00
T-Cu	−0.538	−0.534	−0.225	−0.280	−0.330	−0.467	−0.374	−0.436	−0.0440	1.00
T-Cd	−0.479	−0.609	−0.0520	−0.0810	−0.338	−0.220	−0.285	−0.397	−0.135	0.270	1.00
C-Cu	−0.759	−0.414	−0.455	−0.0870	−0.798	−0.697	−0.444	−0.599	−0.0490	0.470	0.367	1.00
C-Cd	−0.643	−0.355	−0.149	−0.0210	−0.673	−0.669	−0.217	−0.460	0.0660	0.356	0.480	0.826	1.00
DGT-Cu	−0.813	−0.545	−0.580	0.0110	−0.789	−0.783	−0.303	−0.547	−0.0960	0.527	0.274	0.844	0.677	1.00
DGT-Cd	−0.830	−0.509	−0.588	0.0420	−0.829	−0.723	−0.358	-0.624	−0.0350	0.404	0.345	0.794	0.733	0.938	1.00
Biomass	0.44	0.548	0.243	−0.0150	0.321	0.335	−0.108	0.0450	0.301	−0.141	−0.454	−0.410	−0.358	−0.478	−0.498	1.00
Plant Cu	0.438	0.563	0.122	−0.100	0.514	0.489	0.455	0.463	−0.169	−0.553	−0.472	−0.441	−0.472	−0.415	−0.408	−0.149	1.00
Plant Cd	0.346	0.310	0.0230	−0.122	0.426	0.328	0.423	0.400	−0.0690	−0.295	−0.426	−0.340	−0.407	−0.244	−0.262	−0.268	0.852	1.00
A-Cu	0.517	0.770	0.195	−0.0200	0.314	0.459	0.0400	0.148	0.241	−0.510	−0.580	−0.433	−0.404	−0.531	−0.503	0.790	0.295	0.0160	1.00
A-Cd	0.595	0.738	0.216	−0.110	0.476	0.524	0.128	0.233	0.357	−0.406	−0.693	−0.502	−0.499	−0.527	−0.541	0.707	0.442	0.398	0.791	1.00