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.