摘要
经过磷酸溶样和过氧化钠熔样的数据比对以及对影响钛测定的因素的讨论和选择,采用热浓磷酸分解和滴定法测定钒钛磁铁矿中钛含量,该方法操作简便,检测时间短,用于实际样品的测定获得满意结果。对钒钛磁铁矿国家一级标准物质GBW 07225、GBW 07226a进行分析验证,测试结果与标准值相符,相对标准偏差(RSD,n=8)均小于1.5%,符合地质样品分析的质量管理规范要求。
According to data analysis of melting sample by phosphoric acid and sodium peroxide, and discussion of factors affecting the determination of titanium, titration is suitable for determination of titanium contact in Vanadium-titanium magnetite with thermolysis by concentrated phosphoric acid. The method is easily operated with short detection time, which can get a good result for real sample detection. The test results of titanium content in Vanadium- titanium magnetite GBW 07225 and GBW 07226a meet the standard values respectively, and the relative standard deviations of detection were both less than 1. 5%, which showed that the titration detection fitted the requirements of the quality control standard proposed by the analysis of geological samples.
出处
《北京石油化工学院学报》
2015年第2期1-3,共3页
Journal of Beijing Institute of Petrochemical Technology
关键词
磷酸
铝片
二氧化钛
硫酸高铁铵
滴定法
phosphoric acid
aluminium
titanium dioxide
ammonium ferric sulfate
titration
