Determination of vanadium,magnesium,zinc,iron,copper and manganese in stone coal ore by inductively coupled plasma atomic emission spectrometry

The stone coal ore sample was dissolved in a mixed acid of HNO3, HCl, HF and HClO4 V(HNO3)∶V (HCl)∶V(HF) ∶V (HClO4)=1∶3∶2∶3. Then, the content of V, Mg, Zn, Fe, Cu and Mn in sample was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The wavelengths of 210.230 nm, 285.213 nm, 213.856 nm, 259.940 nm, 327.396 nm and 257.610 nm were used as the analytical lines for V, Mg, Zn, Fe, Cu and Mn. The coexisting elements did not have influence on the determination. The matrix Si was removed in form of SiF4 during sample dissolution. The elements above in stone coal ore sample were determined under the optimized conditions, with relative standard deviations (RSD, n=5) in range of 0.98 %-2.1 %, and recoveries in the range of 94 %-102 %.