Abstract:The sample was dissolved with nitric acid and hydrofluoric acid. Then nitric acid and hydrofluoric acid were removed by perchloric acid fuming. The salts were dissolved with hydrochloric acid. Ba 233.527nm, Fe 259.940nm, Ca 317.933nm, Mn 257.610nm, Cr 267.716nm, Al 394.401nm, Ni 231.604nm, Cu 327.396nm and P 178.284nm were selected as analytical lines. The contents of barium, iron, calcium, manganese, chromium, aluminum, nickel, copper and phosphorus were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). Thus the determination method of nine elements in silicon-iron-barium inoculant (including barium, iron, calcium, manganese, chromium, aluminum, nickel, copper and phosphorus) was established. The correlation coefficients of calibration curves of elements were all higher than 0.9995. The detection limits of method were between 0.00006% and 0.00069%. The content of barium, iron, calcium, manganese, chromium, aluminum, nickel, copper and phosphorus in standard sample GSB03-1607-2003 was determined according to the experimental method. The relative standard deviations (RSD, n=11) of determination results ranged from 0.63% to 3.4%. The proposed method was applied for the determination of barium, iron, calcium, manganese, chromium, aluminum, nickel, copper and phosphorus in standard sample GSB03-1607-2003 and YSB14607-2001, and the found results were basically consistent with the certified values.
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