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http://dx.doi.org/10.5657/KFAS.2012.0454

Heavy Metals (Hg, Pb, Cd) Content and Risk Assessment of Commercial Dried Laver Porphyra sp.  

Son, Kwang-Tae (Food Safety Research Division, National Fisheries Research and Development Institute)
Kwon, Ji-Young (Food Safety Research Division, National Fisheries Research and Development Institute)
Jo, Mi-Ra (Food Safety Research Division, National Fisheries Research and Development Institute)
Choi, Woo-Seok (Food Safety Research Division, National Fisheries Research and Development Institute)
Kang, Sung-Rim (Food Safety Research Division, National Fisheries Research and Development Institute)
Ha, Na-Young (Food Safety Research Division, National Fisheries Research and Development Institute)
Shin, Jin-Wall (Food Safety Research Division, National Fisheries Research and Development Institute)
Park, Kunbawui (Southwest Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Kim, Ji-Hoe (Food Safety Research Division, National Fisheries Research and Development Institute)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.45, no.5, 2012 , pp. 454-459 More about this Journal
Abstract
To investigate heavy metals (Hg, Pb and Cd) and their potential health risks in commercial dried laver (Porphyra sp.), we collected 45 samples from the major production areas on the western and southern coasts of Korea (Hwaseong, Seocheon, Gunsan, Muan, Shinan, Jindo, Haenam, Wando, Jangheung, Goheung and Busan). The Hg, Pb and Cd concentrations were measured using inductively coupled plasma spectrometry (ICP-MS) or a mercury analyzer. The average Hg, Pb and Cd concentrations in the dried laver were $0.006{\pm}0.0017$, $0.196{\pm}0.0614$ and $0.894{\pm}0.4882$ mg/kg, respectively. Based on the 2007 Korean Public Nutrition Report, these levels are 0.02, 0.11 and 2.47% of the provisional tolerable weekly intake (PTWI) for Hg, Pb and Cd, respectively, established by the FAO/WHO. The hazard quotient (HQ) determined from the ratio of exposure and safe levels were less than 1.0. Therefore, the levels of overall exposure to Hg, Pb and Cd for dried laver were below the recommended JECFA (Joint FAO/WHO Expert Committee on Food Additives) levels, which indicate safe levels for public health.
Keywords
Dried laver; Heavy metal; PTWI; Hazard quotient;
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