应用ICP-MS测定苹果中重金属的分布

Application of ICP-MS to Detecting Heavy Metals in Apple

食品安全已经成为现阶段国际国内重要的社会问题,特别是重金属、农药和兽药残留。以市场销售的红富士苹果为实验材料,借助于ICP-MS对苹果中重金属在果皮和果肉的分布进行了测定。结果显示,同一个果实中重金属(Cr,Sb,Cd,Pb,Sn,Zn,Cu,Co,Ni和Tl)含量主要集中于果皮,果肉中重金属含量显著低于果皮。这些结果说明重金属被植物吸收以后,容易在果皮积累,果肉中含量较少。在目前环境污染严重的背景下,食用水果时应当注意削皮,尽量减少重金属危害。重金属在苹果果实中分配规律的机理需要进一步研究。

With the rapid development of the society, more and more attention has been focused on food＇s edible safety, especially on the pollutions of heavy metals, pesticides and veterinary drug residues. Fuji apples bought from market were studied by ICP-MS to detect the heavy metals in peel and pulp. The results showed that the fruit pulp accumulated much less heavy metals （Cr, Sb, Cd, Pb, Sn, Zn, Cu, Co, Ni and T1） than the fruit peel. All the data showed that heavy metals can pollute the fruit peel more easily than the fruit pulp, so with the pollution of environment the apple should be peeled before eating to protect our health. But the accumulating mechanism of heavy metals in fruit peel should be further studied.