Spatial Distribution and Contamination Assessment of Heavy Metals in Surface Sediments of the Caofeidian Adjacent Sea after the Land Reclamation, Bohai Bay

Table 2

The concentrations of heavy metals in the sediments of Caofeidian adjacent sea and other reports (Unit: mg/kg). The concentrations using to assess the contamination of heavy metals are also shown.

	Cd	Cr	Cu	Ni	Pb	Zn
Caofeidian inshore	0.19–0.65	27.16–115.70	11.14–39.01	17.37–65.90	15.08–24.06	41.64–139.56	This study
	0.36	78.64	29.07	41.35	21.11	89.60
Intertidal Bohai Bay	0.12	68.6	24	28	25.1	73	[10]
Laizhou Bay	0.12	60	22	-	21.9	60.4	[44]
Coastal Bohai bay	0.22	101.4	38.5	40.7	34.7	131.1	[22]
Liaodong Bay	1.2	46.4	19.4	22.5	31.8	71.7	[7]
Luan River Estuary	0.09	41.14	17.17	15.6	30.98	44.63	[28]
Yangtze River Estuary	0.19	79.1	24.7	31.9	23.8	82.9	[15]
Yangtze River Estuary	0.15	34.64	17.46	-	30.47	66.91	[45]
Background (UCC)	0.10	35	25	20	20	71	[46]
Class-1	0.50	80	35	-	60	150	[30]
Class-2	1.5	150	100	-	130	350
Class-3	5.00	280	200	-	250	600
TEL	0.68	52.3	18.7	15.9	30.2	124	[47]
PEL	4.21	160	108	42.8	112	271

UCC: upper continental crust; TEL (threshold effect level): guideline values indicate the metal concentrations below which adverse effects on biota are rarely observed; PEL (probable effects level): guideline values indicate the metal concentrations above which adverse effects on biota are probably observed.