유통 마른 김(Porphyra sp.)의 중금속(Hg, Pb, Cd) 함량과 위해성 평가

To investigate heavy metals (Hg, Pb and Cd) and their potential health risks in commercial dried layer (Porphyra sm), we collected 45 samples from the major production areas on the western and southern coasts of Korea (Hwaseong, Seo-cheon, Gunsan, Muan, Shinan, undo, I-laenam, 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 layer were 0.006±0, 0.017, 0.196+0.0614 and 0.894+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 layer were below the recommended JECFA (Joint FAO/WHO Expert Committee on Food Additives) levels, which indicate safe levels for public health.