Determination of iron,silicon,manganese and magnesium in sponge titanium by inductively coupled plasma atomic emission spectrometry

The sponge titanium sample was dissolved in sulfuric acid and nitric acid.Then iron,silicon,manganese and magnesium were determined by inductively coupled plasma atomic emission spectrometry.During determination,238.204 nm,251.611 nm,257.610 nm and 279.553 nm were used as the spectral lines of iron,silicon,manganese and magnesium,respectively.The spectral interference was eliminated by conducting dual-point correction to background emission drift.The precision test indicated that the relative standard deviations(RSD,n=10) of each element for one sample were all lower than or equal to 5 %.The recovery test was carried out with standard addition method,and the obtained recoveries were in the range of 90 %-130 %.