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Monitoring Methylmercury in Abyssal Fish  

Kim, Seong-Cheol (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Jang, Jin-Wook (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Kim, Hyun-Ah (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Lee, Sang-Ho (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Jung, Young-Ji (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Kim, Ji-Yeon (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Ahn, Jong-Hoon (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Park, Eun-Hye (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Ko, Yong-Seok (Cardiovascula and Neuropharmacological Drugs Division, Drug Evaluation Department, Korea Food and Drug Administration)
Kim, Dong-Sul (Food Investigation Science Team, Food Safety Evaluation Department, National Institute of Food and Drug Safety Evaluation)
Kim, Sang-Yub (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Jang, Young-Mi (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Kang, Chan-Soon (Imported Food Analysis Division, Center for Food and Drug analysis, Busan Regional Korea Food and Drug Administration)
Publication Information
Korean Journal of Food Science and Technology / v.42, no.4, 2010 , pp. 383-389 More about this Journal
Abstract
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-${\mu}ECD$) 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.
Keywords
methylmercury; abyssal fish; monitoring; provisional tolerable weekly intake; GC-${\mu}ECD$;
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