Table 10.

Pearson's correlation matrix between heavy metals of sludge and roots of plants of HIE.

Heavy metals in sludge		Heavy metals in plant roots
		Cd	Cr	Pb	Zn
Cd	Pearson Correlation	0.754	0.37	−0.572	0.425
	Sig. (2-tailed)	0.141	0.54	0.313	0.476
	N	5	5	5	5
Cr	Pearson Correlation	−0.144	−0.608	0.154	0.1
	Sig. (2-tailed)	0.817	0.277	0.804	0.873
	N	5	5	5	5
Pb	Pearson Correlation	−0.067	−0.253	0.793	−0.802
	Sig. (2-tailed)	0.915	0.681	0.109	0.103
	N	5	5	5	5
Zn	Pearson Correlation	0.752	0.562	−0.121	−0.158
	Sig. (2-tailed)	0.142	0.324	0.847	0.8
	N	5	5	5	5

* Correlation is significant at the 0.05 level (2-tailed).