Determination of Al,Ba and Ca in Si-Al-Ba-Ca Alloy by Inductively Coupled Plasma Atomic Emission Spectrometry

The method of determining the content of Al,Ba and Ca in Si-Al-Ba-Ca alloy quickly by inductively coupled plasma-atomic emission spectrometry( ICP-AES) was issued,the sample was dissolved by nitric acid and hydrofluoric acid and then perchloric acid was added to make smoke rise,adding nitric acid again to dissolve sample.By selecting 396.152 nm,233.527 nm and 184.006 nm as Al,Ba and Ca analysis spectral line respectively,using the standard samples,the calibration curves and optimization of instrument work parameter were established.Under the selected experimental conditions and the selected optimal instrumental parameters,a group of standard samples was determined.The found results of Al,Ba and Ca were consistent with the certified values.The relative standard deviations( RSD) were 0.59% for Al,0.51% for Ba and 1.36% for Ca,and the relative error was less than 3%.