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KMID : 1134820100390121873
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Journal of the Korean Society of Food Science and Nutrition
2010 Volume.39 No. 12 p.1873 ~ p.1879
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Heavy Metal Contents of Vegetables Available on the Markets in Seoul
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Choi Chae-Man
Choi Eun-Jung
Kim Tae-Rang
Hong Chae-Kyu
Kim Jung-Hun
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Abstract
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This study was conducted to estimate the heavy metal contents of vegetables available on the markets in Seoul area. Concentrations of mercury (Hg), lead (Pb), cadmium (Cd), arsenic (As), chrome (Cr), nickel (Ni), copper (Cu), and zinc (Zn) were measured in 300 samples using a mercury analyzer and inductively coupled plasma optical emission spectrometer (ICP-OES) after wet digestion. The average values of heavy metals in vegetables were as follows [mean (minimum～maximum), ㎎/㎏]; Hg: 0.0005 (N.D～0.007), Pb: 0.011 (N.D～0.259), Cd: 0.012 (N.D～0.188), As: 0.002 (N.D～0.142), Cr: 0.100 (0.019～0.954), Ni: 0.093 (0.003～1.231), Cu: 1.098 (0.072～36.29), and Zn: 3.48 (0.485～21.31). The heavy metal contents of vegetables available on the markets in Seoul were almost the same as or lower than those reported in other studies. The weekly average intakes of mercury, lead and cadmium from vegetables take 0.44～7.71% of PTWI (Provisional Tolerable Weekly Intakes) that the FAO/WHO Joint Food Additive and Contaminants Committee sets for evaluation of food safety.
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KEYWORD
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vegetables, heavy metals, provisional tolerable weekly intake
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