牛耳枫等五种药材重金属元素含量分析

目的 测定牛耳枫、三叉苦、胆木、青牛胆、山苦茶五种药材中重金属元素含量.方法 采用石墨炉原子吸收光谱法测定五种药材中铜、铝镉含量,用氢化物原子荧光法测定其中的砷、汞含量.结果 牛耳枫中5种重金属元素(铜、镉、铅、汞及砷)含量分别为6.700,0.080,3.000,0.052,0.690mg/kg;三叉苦中5种重金属元素(铜、镉、铅、汞及砷)含量分别为4.300,0.040,1.600,0.040,0.820mg/kg;胆木中5种重金属元素(铜、镉、铅、汞及砷)含量分别为2.700,0.020,1.250,0.038,0.400mg/kg;青牛胆中5种重金属元素(铜、镉、铅、汞及砷)含量分别为5.000,0.120,0.690,0.050,0.620mg/kg;山苦茶中5种重金属元素(铜、镉、铅、汞及砷)含量分别为4.400,0.075,0.520,0.044,0.480mg/kg.结论 5种药材重金属含量均符合药用植物及制剂的外经贸绿色行业标准.