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Food Chem. 2015 Feb 15;169:464-70. doi: 10.1016/j.foodchem.2014.08.020. Epub 2014 Aug 14.

Determination of toxic heavy metals and speciation of arsenic in seaweeds from South Korea.

Author information

1
Department of Food and Nutrition, Chosun University, Gwangju 501-759, Republic of Korea.
2
Food Contaminants Divisions, Food Safety Evaluation Department, Ministry of Food and Drug Safety, Cheongwon 363-951, Republic of Korea.
3
Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.
4
Department of Food and Nutrition, Chosun University, Gwangju 501-759, Republic of Korea. Electronic address: kskim@chosun.ac.kr.

Abstract

This study aimed at determining the levels of toxic heavy metals including As, Pb, Cd, Al, Hg and As species, such as, As-III, As-V, MMA, DMA, AsB, and AsC in various edible species of seaweeds from South Korea. ICP-MS was used for determination of As, Pb and Cd, ICP-OES was used for Al, DMA was used for Hg, and LC-ICP-MS was used for As speciation. The analytical methods were validated by linearity, detection limits, precision, accuracy and recovery experiments, obtaining satisfactory results in all cases. From the results toxic heavy metals were found in the decreasing order of: Al>As>Pb-Cd>Hg. Generally concentrations of all analysed heavy metals and both organic and inorganic species of As were very low compared to PTWIs specified by JECFA and EC. Their contribution to the overall intake by the subject seafoods was found very low and thus would not pose any threat to consumers.

KEYWORDS:

As speciation; ICP-MS; ICP-OESLC-ICP-MS; Seaweeds; Toxic heavy metals

PMID:
25236252
DOI:
10.1016/j.foodchem.2014.08.020
[Indexed for MEDLINE]

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