电感耦合等离子体原子发射光谱法测定70钛铁中锰、磷、铜、铬、镍、钼、钒和铝  

ICP-AES Determination of Mn,P,Cu,Cr,Ni,Mo,V and Al in 70 Ferrotitanium

作　　者：刘爱坤[1] 戴学谦[1] 张瑞霖[1] 胡建春[1] 

机构地区：[1]山西太钢不锈钢股份有限公司技术中心,太原030003

出　　处：《理化检验（化学分册）》2010年第2期186-188,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：提出了用电感耦合等离子体原子发射光谱法(ICP-AES)测定70钛铁中共存的8种杂质元素(锰、磷、铜、铬、镍、钼、钒、铝)。试验表明:试样宜用浓盐酸3mL及浓硝酸3mL溶解,且在制作工作曲线时应加入相同量的酸溶解基体金属(即所加入的纯铁粉和纯钛粉),所选用的8种元素的分析谱线均为检出限低、且光谱干扰小或易于扣除者。制作工作曲线时采用基体匹配法,从而消除基体干扰,方法中8种元素的检出限(3s/b)在0.002～0.02mg·mL-1范围内。按所提出方法分析了一个70钛铁标样(YSBC15602),共测定了11次,上述8种元素的测定结果与已知值相符,测定值的相对标准偏差(n=11)在0.74%～4.11%范围内。A method of ICP-AES determination of 8 elements, i. e. , Mn, P, Cu, Cr, Ni, Mo, V and A1, in ferrotitanium was proposed. It was found that the sarnple was suitably dissolved in conc. HCl （3 mL） and conc. HNO3 （3 mL）, and that same amount of acids should be added to the matrix metals （i. e. pure iron and pure titanium powder） in the preparation of working curves. Those spectral lines showing low detection limits and less spectral interferences were selected as the analytical spectral lines for determination of the 8 elements. By using the matrix matching method in preparation of working curves, the matrix interference was eliminated. Values of detection limit （3s/b） for the 8 elements were found in the range of 0. 002-0. 02 mg · L^-1. Tests for accuracy and precision were made by analyzing a standard sample （YSBC 15602） for 11 determinations, results of the 8 elements found were in consistency with the known values, and values of RSD＇s （n=11） obtained were in the range of 0. 74%-4. 11%.

关 键 词：电感耦舍等离子体原子发射光谱法 70钛铁 杂质元素 

分 类 号：O657.31[理学—分析化学]