Dietary intake of toxic and essential trace elements by the children and parents living in Tokyo Metropolitan Area, Japan. |
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Authors: | N N Aung J Yoshinaga J-I Takahashi |
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Affiliation: | Institute of Environmental Studies, University of Tokyo, Hongo 7-3-1 Bunkyo-ku Tokyo 113-8656, Japan. aung@env.t.u-tokyo.ac.jp |
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Abstract: | This study estimated the dietary intakes of 25 pairs of Japanese children and their parents to 12 toxic and essential trace elements using 7-day duplicate diet composites. The estimated intakes of lead (children = 5.34 microg day-1, adults = 6.74 microg day-1) and tin (162 and 152 microg day-1) were below tolerable limits, but large difference in aluminium intakes (7.32 and 12.1 mg day-1) among the subjects warranted further investigations. Intakes of cadmium in both children and adults (13.2 and 15.9 microg day-1) were high, but a low uranium (U) intake was observed (0.593 and 0.587 microg day-1). Intakes of copper (567 and 784 microg day-1), manganese (1.56 and 2.72 mg day-1), zinc (4.93 and 6.75 mg day-1), and molybdenum (103 and 131 microg day-1) were close to the recommended values. Concentrations of chromium, nickel and selenium were lower than the detection limits in most cases. |
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