Table 6. Heavy metal concentrations (mg/kg, ww) in shellfishes (abalone; ark shell clam; comb pen clam, horned turban; mussel; oyster; scallop; sea squirt; short neck clam; surf clam) collected from Korean coastal areas

Shellfish species	Value	Heavy metal (mg/kg, ww)
		Pb	Cd	As	Cr	Cu	Ni	Zn	Ag	Hg
Abalone	Ave	0.0280	0.664	4.52	0.0346	2.39	0.665	18.8	0.102	0.0193
	Min	0.00470	0.231	2.22	< LOQ	1.06	0.0882	8.32	0.0296	0.00548
	Max	0.0741	1.36	7.89	0.0955	4.97	1.17	106	0.256	0.0582
Ark shell clam	Ave	0.105	0.304	3.382	0.065	0.671	0.030	14.552	0.053	0.027
	Min	0.078	0.108	1.843	0.035	0.468	0.001	12.708	0	0.015
	Max	0.149	0.441	5.775	0.078	0.806	0.050	16.991	0.153	0.038
Comb pen clam	Ave	0.0184	0.363	1.42	0.0262	0.291	0.00585	102	0.0379	0.0136
	Min	0.00892	0.202	1.14	< LOQ	0.0636	< LOQ	58.1	< LOQ	0.0130
	Max	0.0279	0.524	1.70	0.0524	0.517	0.0117	145	0.0758	0.0142
Horned turban	Ave	0.0103	0.215	7.63	0.0142	4.31	0.0357	21.5	0.150	0.0171
	Min	0.000750	0.0403	5.82	< LOQ	1.40	< LOQ	12.5	0.0972	0.00973
	Max	0.0274	0.749	15.0	0.0392	16.1	0.393	52.6	0.261	0.0325
Mussel	Ave	0.356	0.413	4.03	0.178	2.78	0.194	40.9	0.0247	0.0198
	Min	0.0582	0.152	1.76	< LOQ	0.675	< LOQ	12.8	< LOQ	0.00922
	Max	1.02	0.975	7.30	0.562	21.3	0.795	328	0.229	0.0436
Oyster	Ave	0.353	0.820	3.25	0.257	73.4	0.260	208	0.398	0.0368
	Min	0.0400	0.416	1.84	0.00505	17.0	< LOQ	41.8	0.113	0.0107
	Max	0.696	1.45	5.14	0.764	143	0.752	466	1.15	0.0560
Scallop	Ave	0.0223	1.09	0.880	0.0454	0.621	0.102	20.9	0.0478	0.0291
	Min	0.00485	0.478	0.460	0.00451	0.393	0.0591	14.1	0.00515	0.0183
	Max	0.0343	1.56	1.27	0.0890	0.915	0.131	34.1	0.103	0.0462
Sea squirt	Ave	0.108	0.146	1.78	0.0267	3.18	0.0411	67.3	0.121	0.0211
	Min	0.0711	0.0388	1.50	< LOQ	2.41	< LOQ	45.9	0.0414	0.00933
	Max	0.178	0.246	2.18	0.101	3.90	0.294	80.6	0.199	0.0553
Short neck clam	Ave	0.221	0.257	5.40	0.332	1.45	0.533	10.4	0.294	0.0382
	Min	0.0544	0.0964	2.73	< LOQ	0.721	0.0806	6.69	0.155	0.0176
	Max	0.588	0.510	8.77	0.820	1.96	1.46	13.5	0.920	0.174
Surf clam	Ave	0.293	0.149	1.687	0.308	1.395	0.354	16.769	0.027	0.030
	Min	0.054	0.181	2.322	0.032	1.067	0.356	12.548	0.038	0.022
	Max	0.548	0.257	2.208	0.712	2.090	0.678	29.288	0.009	0.032

Pb, lead; Cd, cadmium; As, arsenic; Cr, chromium; Cu, copper; Ni, nickel; Zn, zinc; Ag, silver; Hg, mercury; LOQ, limits of quantitation.