太白贝母与暗紫贝母中砷、汞、镉、铅的含量比较

Comparison of the content of arsenic,mercury,cadmium and lead between Fritillaria taipaiensis and FritiLlaria unibracteata by wet digestion-atomic fluorescence spectrum

采用湿法消解-原子荧光分光光度法对不同商品名称太白贝母与暗紫贝母中砷、汞、镉、铅4种有害微量元素的残留量进行测定与分析，为其制订重金属限量标准和合理应用提供科学依据。结果表明，在所有样品中均含有一定量的有害微量元素，铅未检出；太白贝母中砷、汞、镉的残留量分别为0．0109—0．0573、0．0079-49．0291、0．0096-0．2615mg／kg；暗紫贝母中砷、汞、镉的残留量分别为0．0554～0．1091、0．0144～0．0168、0．0176～0．1608mg／kg。不同品种及同一品种不同商品名称的太白贝母和暗紫贝母中重金属含量有差异，但均未超过国家及行业标准的重金属限量值。

In order to afford scientific basis for establishing the limitation standard and suitable application of the heavy metals,arsenic, mercury,cadmium and lead in two different commercial Fritillary Bulbs, Fritillaria taipaiensis and FritiLlaria unibracteata,were detected by wet digestion-atomic fluorescence spectrum in this paper. The results showed that the two kinds of commercial Fritillary Bulbs contained a certain amount of harmful microelement. The residual quantity of arsenic,mercury and cadmium in Fritillaria taipaiensis was 0.0109-0.0573,0.0079N0.0291 and 0.0096-0.2615mg/kg,respectively,and that in FritiLlaria unibracteata was 0.0554-0.1091,0.0144 -0.0168 and 0.0176 -0.1608mg/kg, respectively. However, the residual quantity of lead was not detected in both of cultivars. Different cultivars or the same cultivar with different commercial names showed different content. And all of them did not exceed the limitation of the country and industrial standards for heavy metal.