Heavy metals including Lead (Pb), Cadmium (Cd), Arsenic (As) and Aluminium (Al) were analysed in oilseeds, noodles, tea leaves and their processed or cooked products to study the effects of food processing methods on migration of heavy metals. The heavy metals were determined with ICP-MS and ICP-OES following microwave-assisted acid digestion. Heavy metals in oilseeds, noodles and teas were reduced by extracting oils, boiling noodles, and infusing teas. And the transfer of heavy metals into boiling water and infusion tea was increased as the boiling and infusion time is increased. Heavy metals in foods are water soluble and heavy metals in foods would be decreased when foods are processed or cooked with water. Furthermore, it is needed to determine the migration rates in other cooked foods and assess the risk of heavy metals with concentrations calculated by the migration rates.

中文翻译：

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食品加工方法对重金属向食品迁移的影响

分析了油料，面条，茶叶及其加工或煮熟的产品中铅（Pb），镉（Cd），砷（As）和铝（Al）等重金属，以研究食品加工方法对重金属迁移的影响。微波辅助酸消解后，通过ICP-MS和ICP-OES测定重金属。通过提取油，煮沸的面条和注入茶，减少了油料，面条和茶中的重金属。随着沸腾和浸泡时间的增加，重金属向沸水和泡茶的转移也增加了。食品中的重金属是水溶性的，当用水加工或烹饪食品时，食品中的重金属将减少。此外，