摘要
本文研究了钢铁冶金中原子吸收分析锶的方法。选择了最佳仪器工作条件;考察了不同酸介质和27种元素的干扰;试验了多种抗干扰试剂,确定加镧盐消除铝、磷、钛、硅等元素的干扰,抗坏血酸抑制基体(铁)效应。应用本法分析了Fe—Sr—S三元合金、普碳钢、低合金钢、Sr—Si—Fe合金以及炉渣等试样。方法简便,结果令人满意。
Determination of Sr in ferrous metallurgy by flame atomic absorption spectrophotometry has been studied. The optimum conditions of instrument was selected. The different concentration of varying acid medium and the interference of twenty-seven coexisting elements on the determination of Sr has been investigated. The various interference depressing agents have also been examined. The lanthanum chloride is selected as releasing agent for eliminating the interference of P(PO_4^(3-)) Si(SiO_3^(2-)) Al(Ⅲ) Ti(Ⅳ) Nb(Ⅴ) Zr(Ⅵ)etc. The matrix effect (Fe) has been depressed by adding ascorbic acid. The method has been used in the analysis of ternary melts (Fe-Sr-S). Sr-Si-Fe alloy, carbon steel, low alloy steel and various slag samples. The method is simple and rapid with satisfactory results.
关键词
钢铁冶金
原子吸收光谱
锶
Fcrrous mctallurgy
Flamc atomic absorption spcctrophotomctry
Strontium.
