采用电感耦合等离子体原子发射光谱法测定新型富钛料中杂质元素锰、磷、钒、铁、钙、镁、铬和铝的含量。样品用硝酸、盐酸、氢氟酸和硫酸(1+1)溶液消解。对共存元素进行了干扰试验,采用基体匹配和同步背景校正措施消除基体影响。方法的检出限(3s)在0.000 9~0.085 mg·L-1之间。应用此法分析了新型富钛料试样,测定结果与其它化学分析方法测定值一致。方法的回收率在95.8%~113%之间;相对标准偏差(n=11)小于3.9%。

The impurity elements, including Mn, P, V, Fe, Ca, Mg, Cr and Al, in a new rich-titanium material were determined by ICP-AES. Sample was digested with HNO3, HCl HF and H2SO4 (1+1). Interference of coexisting element was tested, and interference of spectral background and matrix effect were eliminated by matrix matching and synchronous background calibration. Values of detection limits (3s) found were in the range of 0.000 9-0.085 mg·L. The proposed method was used in the analysis of sample of a new rich-titanium material, and the results obtained were in consistency with those obtained by other methods given in literature. Values of recovery of the method were found in the range of 95.8%-113% with RSD′s (n=11) less than 3.9%.