Table 9. PTWI of heavy metals from shellfish consumption by adults living in Korea

	Shellfish species	PTWI (µg/kg b.w./week)
		Pb	Cd	As	Cr	Cu	Ni	Zn	Ag	Hg
Total person average	Abalone	1.35 × 10–3	3.20 × 10–2	2.18 × 10–1	1.67 × 10–3	1.16 × 10–1	3.21 × 10–2	9.05 × 10–1	4.92 × 10–3	9.29 × 10–4
	Ark shell clam	6.07 × 10–4	2.13 × 10–3	3.76 × 10–2	3.99 × 10–4	4.48 × 10–3	9.38 × 10–5	1.18 × 10–1	8.16 × 10–4	1.54 × 10–4
	Comb pen clam	2.22 × 10–5	4.37 × 10–4	1.71 × 10–3	3.15 × 10–5	3.50 × 10–4	7.05 × 10–6	1.23 × 10–1	4.56 × 10–5	1.64 × 10–5
	Horned turban	1.38 × 10–4	2.88 × 10–3	1.02 × 10–1	1.89 × 10–4	5.77 × 10–2	4.78 × 10–4	2.88 × 10–1	2.01 × 10–3	2.29 × 10–4
	Mussel	5.65 × 10–2	6.54 × 10–2	6.39 × 10–1	2.83 × 10–2	4.40 × 10–1	3.07 × 10–2	6.49	3.92 × 10–3	3.14 × 10–3
	Oyster	4.23 × 10–2	9.84 × 10–2	3.89 × 10–1	3.08 × 10–2	8.80	3.12 × 10–2	2.50 × 101	4.78 × 10–2	4.42 × 10–3
	Scallop	1.49 × 10–4	7.27 × 10–3	5.89 × 10–3	3.04 × 10–4	4.16 × 10–3	6.80 × 10–4	1.40 × 10–1	3.20 × 10–4	1.95 × 10–4
	Sea squirt	3.28 × 10–3	4.43 × 10–3	5.43 × 10–2	8.13 × 10–4	9.69 × 10–2	1.25 × 10–3	2.05	3.69 × 10–3	6.44 × 10–4
	Short neck clam	3.02 × 10–2	3.50 × 10–2	7.37 × 10–1	4.53 × 10–2	1.98 × 10–1	7.28 × 10–2	1.41	4.01 × 10–2	5.22 × 10–3
	Surf clam	1.50 × 10–5	5.69 × 10–6	8.05 × 10–5	1.42 × 10–5	6.92 × 10–5	1.20 × 10–5	7.17 × 10–4	2.36 × 10–6	2.21 × 10–6
	Sum	1.35 × 10–1	2.48 × 10–1	2.18	1.08 × 10–1	9.72	1.69 × 10–1	3.65 × 101	1.04 × 10–1	1.50 × 10–2
Ingestion person average	Abalone	5.77 × 10–2	1.37	9.33	7.14 × 10–2	4.95	1.37	3.88 × 101	2.11 × 10–1	3.98 × 10–2
	Ark shell clam	2.98 × 10–1	1.04	1.84 × 101	1.96 × 10–1	2.20	4.61 × 10–2	5.81 × 101	4.00 × 10–1	7.55 × 10–1
	Comb pen clam	1.58 × 10–2	3.11 × 10–1	1.22	2.25 × 10–2	2.49 × 10–1	5.02 × 10–3	8.73 × 101	3.25 × 10–2	1.17 × 10–2
	Horned turban	7.26 × 10–3	1.52 × 10–1	5.39	1.00 × 10–2	3.05	2.53 × 10–2	1.52 × 101	1.06 × 10–1	1.21 × 10–2
	Mussel	8.77 × 10–1	1.02	9.92	4.39 × 10–1	6.84	4.77 × 10–1	1.01 × 102	6.08 × 10–2	4.87 × 10–2
	Oyster	1.49	3.46	1.37 × 101	1.08	3.09 × 102	1.10	8.78 × 102	1.68	1.55 × 10–1
	Scallop	7.88 × 10–2	3.84	3.11	1.60 × 10–1	2.20	3.59 × 10–1	7.39 × 101	1.69 × 10–1	1.03 × 10–1
	Sea squirt	8.47 × 10–1	1.15	1.40 × 101	2.10 × 10–1	2.50 × 101	3.24 × 10–1	5.30 × 102	9.53 × 10–1	1.66 × 10–1
	Short neck clam	2.36 × 10–1	2.74 × 10–1	5.78	3.55 × 10–1	1.56	5.70 × 10–1	1.11 × 101	3.15 × 10–1	4.09 × 10–2
	Surf clam	1.60 × 10–2	6.08 × 10–3	8.61 × 10–2	1.52 × 10–2	7.40 × 10–2	1.28 × 10–2	7.67 × 10–1	2.52 × 10–3	2.37 × 10–3

Pb, lead; Cd, cadmium; As, arsenic; Cr, chromium; Cu, copper; Ni, nickel; Zn, zinc; Ag, silver; Hg, mercury; PTWI, provisional tolerance weekly intake.