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KMID : 0881720180330030168
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Journal of Food Hygiene and Safety
2018 Volume.33 No. 3 p.168 ~ p.175
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A Study on the Total Mercury (Hg) Monitoring and Methylmercury (MeHg) Analysis method and Exposure Assessment of Methylmercury (MeHg) in Marine Products
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Kwak Shin-Hye
Kim Ki-Cheol
Kim Kyung-A
Kang Suk-Ho
Kwon Hye-Jung
Cho Yoon-Sik
Kang Kyung-Ja
Lee Pil-Suk
Cho Wook-Hyun
Moh A-Ra
Park Yong-Bae
Yoon Mi-Hye
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Abstract
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The use of microwave-assisted extraction and an acid-base clean-up process to determine the amount of methylmercury (MeHg) in marine products was suggested in order to improve the complicated sample preparation process. The optimal conditions for microwave-assisted extraction was developed by using a 10% NaCl solution as an extraction solution, setting the extraction temperature at 50°C, and holding for 15 minutes to extract the MeHg in marine products. A NaOH solution was selected as a clean-up substitute instead of L-cysteine solution. Overall, 670 samples of marine products were analyzed for total mercury (Hg). Detection levels were in the range of 0.0006~0.3801 μg/kg. MeHg was analyzed and compared using the current food code and the proposed method for 49 samples which contained above 0.1 mg/kg of Hg. Detection ranges of methylmercury followed by the Korea Food Code and the proposed method were 75.25 (ND~516.93) μg/kg and 142.07 (100.14~244.55) μg/kg, respectively. The total analytical time of proposed method was reduced by more than 25% compared with the current food code method.
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KEYWORD
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Methylmercury (MeHg), Mercury (Hg), Microwave-assisted extraction, PTWI , Marine products
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