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KMID : 0380620100420040383
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Korean Journal of Food Science and Technology
2010 Volume.42 No. 4 p.383 ~ p.389
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Monitoring Methylmercury in Abyssal Fish
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Kim Seong-Cheol
Jang Jin-Wook
Kim Hyun-Ah
Lee Sang-Ho
Jung Young-Ji
Kim Ji-Yeon
Ahn Jong-Hoon
Park Eun-Hye
Ko Yong-Seok
Kim Dong-Sul
Kim Sang-Yub
Jang Young-Mi
Kang Chan-Soon
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Abstract
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The aim of this study was to determine the methylmercury (MeHg) levels in abyssal fish species. The MeHg in the fishes was extracted with hydrochloric acid and toluene and then purified using an L-cysteine solution. The extract was analyzed with a gas chromatography-electron capture detector (GC-μECD) with a thermon Hg-capillary column. The detection limit and the recovery of the method were 0.002 and 84.2-98.5% (mean, 93.4%), respectively. The MeHg content in 492 abyssal fishes ranged from 0.037 to 2.009 mg/kg. The levels of MeHg [range, mg/kg (mean)] were significantly dependent on fish species and presented as the following; 0.157-2.009 (0.546) in Scalloped hammerhead shark, 0.211-0.878 (0.501) in Blue shark, 0.121-0.993 (0.482) in Spiny dogfish, 0.243-0.658 (0.397) in Salmon shark, 0.074-1.958 (0.353) in Blacktip shark, 0.038-0.807 (0.302) in Southern hake, 0.099-0.511 (0.300) in Scorpion fish, and 0.037-0.133 (0.067) in Ling. The monitoring results showed that the estimated weekly intake of MeHg from sharks, Southern hake, and Ling were lower than the provisional tolerable weekly intake recommended by the Joint FAO/WHO expert committee on food additives.
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KEYWORD
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methylmercury, abyssal fish, monitoring, provisional tolerable weekly intake, GC-μECD
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