目的：评价药食同源药材中重金属铬的污染状况。方法：采用微波消解-石墨炉原子吸收法测定102个药食同源药材中铬的含量，计算药材中铬的每日摄入量与世界公认准则或标准规定的限量的比值。结果：药材中铬的每日摄取量分别是美国和加拿大标准、美国EPA标准和WHO准则规定的耐受摄入量的975.0%、108.3%和78.0%。结论：102个药食药材中铬污染严重，可能会带来潜在健康风险。

This study was aimed to assess the contamination of chromium in medicinal and edible Chinese medicinal materials. Microwave digestion and graphite furnace atomic absorption spectrometry (GFAAS) were applied to the determination of chromium in 102 medicinal and edible Chinese medicinal materials. The ratio of daily intake of chromium in Chinese medicinal materials to tolerance limits of standards or guidelines accepted worldwide were calculated. The results showed that daily intake of chromium in Chinese medicinal materials were 975.0%, 108.3%, 78.0% of tolerance limits recommended by the US and Canada standards, US EPA and WHO guidelines, respectively. It was concluded that serious chromium pollution was found out in 102 medicinals and edible Chinese medicinal materials on the basis of statistical analysis, which indicates potential health risk to chromium for consumers.

科学技术部创新方法工作专项（2009IM031600）：保健食品中有害物质快速分析检测体系建立，负责人：张金兰；科学技术部科技基础性工作专项（2007FY130100）：道地中药材及主要成分的标准物质研制与分析方法研究，负责人：吕扬。