Table 4. Summary of Hg and MeHg concentrations in seafood (unit, mg/kg)

Group	Sample name	N	Hg mean ± S.D.(Min. – Max.)	MeHg mean ± S.D.(Min. – Max.)	%MeHg
Fish	Korean rockfish	3	0.127 ± 0.066(0.069 – 0.199)	0.081 ± 0.028(0.049 – 0.102)	63.4
	Hair tail	7	0.085 ± 0.118(0.007 – 0.272)	0.068 ± 0.104(0.003 – 0.236)	80.8
	Mackerel	5	0.048 ± 0.013(0.035 – 0.064)	0.041 ± 0.007(0.029 – 0.053)	85.3
	Croaker	5	0.022 ± 0.012(0.010 – 0.039)	0.020 ± 0.011(0.008 – 0.032)	89.4
	Pollack	10	0.020 ± 0.011(0.011 – 0.044)	0.014 ± 0.006(0.006 – 0.028)	69.3
	Spanish mackerel	6	0.019 ± 0.010(0.008 – 0.033)	0.009 ± 0.007(0.002 – 0.020)	48.8
	Gizzard	4	0.011 ± 0.003(0.009 – 0.015)	0.007 ± 0.005(0.002 – 0.013)	66.0
	Anchovy	5	0.007 ± 0.002(0.004 – 0.010)	0.002 ± 0.003(N.D. – 0.007)	34.7
		45	0.038 ± 0.058(0.004 – 0.272)	0.028 ± 0.047(N.D. – 0.236)
Mollusks	Squid	10	0.035 ± 0.017(0.005 – 0.056)	0.025 ± 0.014(0.003 – 0.040)	71.7
	Scallop	10	0.014 ± 0.007(0.006 – 0.022)	0.003 ± 0.004(N.D. – 0.008)	23.0
	Little neck clam	5	0.012 ± 0.005(0.006 – 0.020)	0.002 ± 0.005(N.D. – 0.012)	19.9
	Webfoot octopus	5	0.007 ± 0.004(0.003 – 0.013)	0.002 ± 0.002(N.D. – 0.004)	24.2
	Beka squid	5	0.005 ± 0.002(0.002 – 0.007)	0.001 ± 0.001(N.D. – 0.002)	22.8
	Mussel	9	0.005 ± 0.004(0.002 – 0.013)	0.000 ± 0.001(N.D. – 0.004)	10.0
		39	0.015 ± 0.015(0.002 – 0.056)	0.008 ± 0.013(N.D. – 0.040)
Crustacea	Crab	3	0.047 ± 0.031(0.016 – 0.078)	0.040 ± 0.025(0.012 – 0.055)	85.5
	Shrimp	10	0.015 ± 0.010(0.003 – 0.030)	0.009 ± 0.007(N.D. – 0.021)	59.0
		13	0.023 ± 0.021(0.003 – 0.078)	0.016 ± 0.018(N.D. – 0.055)