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详述采用氢化物发生-原子吸收光谱法(HG-AAS法)测定磷矿石、湿法磷酸中微量砷、汞的方法和应用研究。采用该法对几个磷矿石、湿法磷酸中砷、汞含量进行了测定和加标回收实验,砷、汞平均回收率分别为97.51%～97.81%和99.06%～102.85%,该法与其他经典方法测试结果对比无显著差异。HG-AAS法测定微量砷、汞,具有较高精密度、准确度,方法简便、可行,值得推广。
The methods and applications of determination of trace arsenic and mercury in phosphate rock and wet-process phosphoric acid by hydride generation-atomic absorption spectrometry (HG-AAS) are described in detail. The method was applied to the determination of arsenic and mercury in several phosphate ores and wet-process phosphoric acid. The average recoveries of arsenic and mercury were 97.51% ~ 97.81% and 99.06% ~ 102.85%, respectively. There was no significant difference between the other classical methods. HG-AAS determination of trace arsenic, mercury, with high precision, accuracy, method is simple and feasible, it is worth promoting.