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本研究采用过氧化氢溶样,电感耦合等离子体质谱法(ICP-MS)标准加入法测定工业仲钨酸铵中磷量。采用本方法所测得仲钨酸铵中磷量与按现国家标准GB/T 4324.24-2012所得结果吻合。该方法精密度小于5%,检出限为0.0002%,加标回收率在90%~110%之间,可满足实际样品的快速分析。
In this study, the amount of phosphorus in industrial ammonium paratungstate was determined by hydrogen peroxide dissolution and inductively coupled plasma mass spectrometry (ICP-MS) standard addition method. The amount of phosphorus in ammonium paratungstate measured by this method is in accordance with the result obtained according to the current national standard GB / T 4324.24-2012. The method has a precision of less than 5%, a detection limit of 0.0002% and a spiked recovery of 90% ~ 110%, which can meet the needs of rapid analysis of real samples.