Table 5. Correlation Matrix of Studied Heavy Metals, Grain Size, TOC, TN, and pH Values in Sediments^a.

	Co	V	Cu	Pb	Ni	As	Cd	Hg
Co	1
V	0.939**	1
Cu	0.436*	0.341	1
Pb	0.960**	0.964**	0.482*	1
Ni	0.959**	0.951**	0.507**	0.988**	1
As	0.839**	0.937**	0.139	0.872**	0.828**	1
Cd	0.668**	0.556**	0.801**	0.694**	0.734**	0.330	1
Hg	0.535**	0.408*	0.704**	0.565**	0.606**	0.196	0.947**	1
gravel	–0.287	–0.247	0.458*	–0.259	–0.236	–0.296	0.042	–0.082
sand	–0.859**	–0.895**	–0.358	–0.897**	–0.882**	–0.807**	–0.623**	–0.510**
silt	0.848**	0.873**	0.343	0.881**	0.865**	0.784**	0.627**	0.521**
clay	0.835**	0.903**	0.244	0.884**	0.869**	0.846**	0.491*	0.400*
TOC	0.863**	0.852**	0.570**	0.911**	0.931**	0.691**	0.824**	0.723**
TN	0.779**	0.723**	0.650**	0.831**	0.858**	0.528**	0.922**	0.863**
pH	0.089	–0.125	0.376	0.006	0.054	–0.184	0.437*	0.548**

^aNote: **, correlation is significant at the percentile level.