Aging Process of Cadmium, Copper, and Lead under Different Temperatures and Water Contents in Two Typical Soils of China

Table 2

Pearson’s correlation of heavy metal speciation during aging experiments.

Heavy metal speciation		F1	F2	F3	F4
Cd	F1	1	−0.624	−0.336	−0.176
	F2	−0.0815	1	−0.371	−0.336
	F3	−0.375	−00.212	1	0.488
	F4	−0.029	−0.443	0.578	1
Cu	F1	1	−0.950	0.268	−0.810
	F2	−0.971	1	−0.526	0.608
	F3	0.116	−0.315	1	0.117
	F4	−0.870	0.759	0.036	1
Pb	F1	1	−0.991	0.640	−0.200
	F2	−0.993	1	−0.695	0.154
	F3	0.519	−0.590	1	−0.258
	F4	−0.293	0.251	−0.465	1

Correlation is significant at the level (2-tailed). Correlation is significant at the 0.01 level (2-tailed); values in italics denote Pearson’s correlation coefficient for aging experiments under different temperatures, n = 30; underlined values denote Pearson’s correlation coefficient for aging experiments under different water contents of soils, n = 40.