常压微波消解-原子吸收光谱法测定磷矿中铅、镉、汞

采用常压微波消解法前处理磷矿样品,使用GGX-9型原子吸收光谱仪测定磷矿中铅、镉、汞含量,铅、镉、汞检出限分别为0.009 3、0.012 0、0.011 0μg/g,加标回收率分别为100.06%～100.18%、99.73%～100.18%、99.51%～100.63%,3种元素的相对标准偏差均在1%左右。

Determination of lead,cadmium, mercury content in phosphate rock by ordinary pressure microwave digestion-atomic absorption spectrometry

The samples of phosphate rock are pretreated by ordinary pressure microwave digestion method, the content of lead, cadmium, mercury in phosphate rock is determined by GGX-9 type atomic absorption spectrometer, the detection limit of lead, cadmium, mercury are 0.009 3, 0.012 0, 0.011 0 μg/g, the recovery rates of standard addition of lead, cadmium, mercury are 100.06% - 100.18%, 99.73% - 100.18%, 99.51% - 100.63%, the relative standard deviation of 3 elements are all about 1%.