ICP-AES法测定钛铁中硅锰磷铝铜

Determination of Silicon,Manganese,Phosphorus,Aluminium and Copper in Ferrotitanium with Inductively Coupled Plasma Atomic Emission Spectrometry(ICP-AES)

采用酸溶解试样,残渣经沉淀过滤、无水碳酸钠和硼酸的混合熔剂熔融处理后,与酸溶解试液混合、定容。利用电感耦合等离子体原子发射光谱法(ICP-AES)测定钛铁中硅、锰、磷、铝和铜的含量,该方法优选了待测元素分析谱线、仪器工作参数,考察了基体元素钛和铁的干扰影响。采用基体匹配的方式消除干扰的影响,方法检出限为0.0003%~0.0027%。用本方法对标准样品进行测定,各成分的测定值与认定值吻合,相对标准偏差(RSD,n=11)为0.85%~9.03%,满足钛铁分析要求。

The sample is dissolved by acid,residue is precipitated and filtered,the mixed flux of anhydrous sodium carbonate and boric acid is melted as well as it is mixed with acid dissolving test solution and the constant volume process is carried out.The contents of Si,Mn,P,Al and Cu in ferrotitanium are determined with the ICP-AES,the analytical spectral lines of elements to be determined and working parameters of instrument are optimized with this method as well as the disturbing effects of matrix elements Ti and Fe are investigated.The disturbing effects are eliminated with the mode of matrix matching and detection limit of the method is 0.0003%~0.0027%.The standard samples are determined with this method as well as measured values are consistent with certified values of all compositions,relative standard deviation(RSD,n=11)is 0.85%~9.03%,which could meet the analysis requirements of ferrotitanium.