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A Study on the Trace Metals in Potatoes and Root Vegetables  

Choi, Soon-Nam (Department of Food and Nutrition, Sahmyook University)
Chung, Nam-Yong (Department of Food and Nutrition, Sahmyook University)
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Korean journal of food and cookery science / v.19, no.2, 2003 , pp. 223-230 More about this Journal
Abstract
This study was conducted to estimate the contents of 6 trace metals in potatoes and root vegetables purchased in wholesale market in the Seoul region, specifically, Cu. As, Zn, Pb, Cd and Hg. The minimum and maximum results obtained for each metal are summarized as follows for potatoes; Cu : 0.094∼0.344, As : N.D∼0.070, Zn : 0.247∼1.547, Pb : N.D∼0.268, Cd : N.D∼0.005, Hg : 0.001∼0.027, and for root vegetables; Cu : 0.021∼0.510, As : 0.004∼0.045, Zn : 0.143∼3.137, Pb : N.D∼0.372, Cd : N.D∼0.009, Hg : 0.001∼0.195. The daily intakes of trace metals from potatoes and root vegetables were estimated on the basis of the daily intake of these foods by Koreans, which were 0.073∼22.253 and 0.567∼156.219$\mu\textrm{g}$ from potatoes and root vegetables, respectively. The weekly intakes of trace metals were 0.009∼2.596 and 0.066∼18.224$\mu\textrm{g}$ for potatoes and root vegetables, respectively. The weekly intakes of trace metals for potatoes and root vegetables were very much lower than the PTWI(provisional tolerable weekly intake), enough to be within a safe range.
Keywords
trace metals; potatoes; root vegetables;
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