氢氟酸溶解-电感耦合等离子体原子发射光谱法测定海绵钛中硅、铁、锰及镁  

Determination of Si,Fe,Mn,Mg in Sponge Titanium Dissolved in HF Acid by Inductively Coupled Plasma Atomic Emission Spectrometry

作　　者：俞超[1] 蒋增辉[1] 汪永喜 喻生洁 

机构地区：[1]上海市供水调度监测中心,上海200100 [2]金川有限公司检测中心,金昌737100

出　　处：《分析化学》2013年第11期1782-1783,共2页Chinese Journal of Analytical Chemistry

摘　　要：海绵钛是钛材料和钛合金的重要原料，其杂质含量直接影响最终产品的机械性能。国家标准对海绵钛中Si，Fe，Mn及Mg的杂质含量限值做出了明确规定，最小限值为0．01％。目前，国家标准规定的分析方法均为单元素分析法㈦，不仅操作繁琐分析效率低，且测定下限大多在0．01％以上，不能满足海绵钛中杂质含量测定的要求。An analytical method using inductively coupled plasma atomic emission spectroscopy （ICP-AES） for the rapid and accurate determination of Si, Fe, Mn, Mg in sponge titanium was investigated. Samples were decomposed with HF and HNO3. The instrument equipped with a nebulizer and a torch made from HF resisting material was used for the direct determination, which made the pretreatment more convenient and with less interference. The Ti matrix effect on nebulization for Si, Fe, Mn, Mg could be effectively eliminated by using Ti matrix matching, which made the results more accurate. The detection limits of the method were in the range of 0.3-6.2 mg/L; the relative standard deviations were in the range of 1.0% -3.0% and the recoveries of the standard samples were in the range of 95.5% - 110.0% for the determination of Si, Fe, Mn, Mg.

关 键 词：电感耦合等离子体原子发射光谱法 测定下限 海绵钛 酸溶解 杂质含量 国家标准 元素分析法 机械性能 

分 类 号：TG115.33[金属学及工艺—物理冶金] O657.3[金属学及工艺—金属学]