Heavy Metal Contents and Safety Evaluation of Commercial Salts in Seoul
2012
Kim, A.K., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Cho, S.J., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kwak, J.E., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kum, J.Y., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, I.Y., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Kim, J.H., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea | Chae, Y.Z., Seoul Metropolitan Government Research Institute of Public Health and Environment, Seoul, Republic of Korea
This study was to investigate the heavy metal content of 55 commercial salts in the Seoul area. There were 22 types of solar sea salt, 17 types of processed salt and 16 types of reworked salt. Looked at another way, there were 22 types of domestic salt and 33 types of salt imported from France, the U.S., Japan, Australia, New Zealand, and Argentina. The samples were measured using both a mercury analyzer and an Inductively-Coupled Plasma Optical Emission Spectrometer (ICP-OES). The average heavy metal contents for commercial salts were Pb 0.281±0.344, Cd 0.035±0.221, Cr 0.364±0.635, Cu 0.182±0.313, As 0.046±0.062, Ni 0.155±0.247, Al 5.753 ±10.746, Co 0.028±0.211 and Hg 0.001±0.001 mg/kg. The leads were detected highly in solar sea salt rather than in processed salt or reworked salt. Also chrome, arsenic and nickel were found more in processed salt. There were large differences in aluminum content between imported solar sea salt and processed salt. Aluminum was highly detected in French products, showing that salt can be affected by regional differences. The weekly average intakes of Pb, Cd, Cr, Cu, and Hg from commercial salt were 1.652% (0.000~6.754), 0.372% (0.000~7.214), 3.177% (0.000~26.279), 0.008% (0.001~0.049), and 0.031% (0.000~0.094) respectively compared with Provisional Tolerable Weekly Intakes established by the Joint FAO/WHO Expert Committee for the evaluation of food safety. The content of heavy metals from commercial salts was determined to be at safe levels.
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