冷原子吸收光谱法测定磷酸二氢钾中的汞

Determination of Mercury in Potassium Dihydrogen Phosphate by Cold Atomic Absorption Spectrometry

用冷原子吸收光谱法测定磷酸二氢钾中的汞含量,研究了测定介质及其浓度、重铬酸钾用量、还原剂用量、共存元素干扰等因素对测定的影响,在本试验条件下方法的回收率为97%—104%,相对标准偏差<10%。

Mercury in potassium dihydrogen phosphate was determinated by cold atomic absorption spectrometry. The effects of determination medium and concentrations,K2Cr2O7 and SnCl2 consumption ,coexisting elements were studied. The addition recovery is between 97%--104% and the relative standard deviation is less than 10%.