石墨炉原子吸收光谱法测定硅铁合金中的痕量钴  

Determination of cobalt in ferrosilicon alloy by graphite furnace atomic absorption spectrometry

作　　者：缪琳[1] 丁斌[1] 郭德济[2] 王光明[2] 程晓舫[1] 

机构地区：[1]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000 [2]安徽工业大学化学与化工学院,安徽马鞍山243002

出　　处：《安徽工业大学学报（自然科学版）》2004年第4期298-301,共4页Journal of Anhui University of Technology（Natural Science）

摘　　要：考察了石墨炉原子吸收法测定硅铁合金中钴的最佳灰化、原子化的条件、酸介质及共存元素的影响。研究并比较了一些基 体改进剂对测定钴的增敏作用。以盐酸为介质、抗坏血酸作基体改进剂的测定体系对抑制干扰、提高分析灵敏度、扩大线性范围 具有较好效果。Determination of trace cobalt in ferrosilicon alloy by graphite furnace atomic absorption spectrometry was studied.The optimum conditions of ashing and atomization,effect of various acid media and coexistent elements on the determination of Co were investigated.The enhancement effect of some matrix modifiers in the determination of Co was also examined. When HC1 was selected as acid medium and ascorbic acid was selected as matrix modifier to determine Co. The sensitivity of the method was enhanced .The linear range was satisfactory.

关 键 词：石墨炉 原子吸收光谱法 硅铁合金 钴 

分 类 号：O657.31[理学—分析化学]