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| Analysis of heavy metal in edible vegetable oils and its health risk assessment |
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| KeyWord:edible vegetable oil heavy metal health risk assessment |
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| Abstract: |
| In order to research the contamination degree and hazards of heavy metals, the contents of eight kinds of heavy metals in edible vegetable oils were simultaneously determined by inductively coupled plasma mass spectrometer(ICP-MS) after microwave digestion. The health risk assessment model of heavy metal contamination was established according to the method recommended by United States Environmental Protection Agency(USEPA). The health risks of oral intake of eight kinds of heavy metals As、Cr(Ⅵ)、Cd、Pb、Cu、Zn、Ni and Mn in edible vegetable oils were preliminarily assessed. The results showed that the total health risk of the eight kinds of heavy metals was 1.05×10-3 a-1， in which the carcinogenic risk was 1.05×10-3 a-1 and the non-carcinogenic risk was 3.38×10-10 a-1. The health risks caused by carcinogenic heavy metals in edible vegetable oils decreased as the order: Cr(Ⅵ), As, Cd，and the risks caused by non-carcinogenic heavy metals decreased as the order: Ni, Pb, Cu, Zn, Mn. It indicated that the health risk caused by carcinogenic heavy metals was much higher than that caused by non-carcinogenic heavy metals, and Cr(Ⅵ) showed the highest potential risk. |
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