电感耦合等离子体发射光谱法测定铝合金中的多种金属元素

通过盐酸-硝酸-氢氟酸溶解铝合金试样，电感耦合等离子体发射光谱法测定铝合金中硅、锰、铜、铁、镁、锌6种元素. 选择灵敏度高、干扰小、响应强度大的分析谱线，采用基体匹配法，对铝合金试样进行了加标回收和精密度试验，并针对硅的质量分数在0.05%～10.00%之间的铝合金试样进行了样品试验. 结果表明，铝合金中6种元素的回收率为93.0%～109.3%，相对标准偏差（RSD）为0.35%～3.14%，准确度和重复性较好，可满足日常检验检测需求.

Determination of Metal Elements in Aluminum Alloy by Inductively Coupled Plasma Emission Spectrometry

By dissolving aluminum alloy samples with hydrochloric acid-nitric acid-hydrofluoric acid, six elements of silicon, manganese, copper, iron, magnesium and zinc in aluminum alloy were determined by inductively coupled plasma emission spectrometry. The analytical spectral lines with high sensitivity, low interference and high response intensity were selected, and the recovery rate and precision of aluminum alloy samples were tested by the matrix matching method. The sample tests were carried out for aluminum alloy samples with silicon mass fraction of 0.05%～10.00%. The results showed that the recoveries of six elements in aluminum alloy were 93.0%～109.3%, and the relative standard deviations (RSD) were 0.35%～3.14%, and the accuracy and repeatability were good, which can meet the daily inspection requirements.