Table 2.

Concentration of trace elements in bottom sediments

Parameters	Zn	Cd	Pb	Ni	Cu	Cr	Hg	Mean PECQs
	mg kg−1 d.m
Mean	439.4	3.72	67.59	20.43	258.3	32.21	0.106	0.68
Median	152.2	0.98	48.22	7.79	63.26	6.36	0.033	0.26
SD	503.1	4.92	33.79	20.88	406	42.36	0.131	0.82
Minimum	79.74	0.10	35.69	3.29	33.50	2.92	0.007	0.13
Maximum	1796	15.67	136.8	68.75	1506	132.7	0.537	2.78
CV%	114	132	50	102	157	132	124	120