硼矿-硼镁铁矿中硼的测定―酸碱中和容量法  

Boron Ores―ludwigite the determination of boron content―acid and alkali neutralization volumetric method

作　　者：牟英华[1] 

机构地区：[1]本钢技术中心,辽宁本溪117000

出　　处：《本钢技术》2016年第3期37-39,共3页Bengang Technology

摘　　要：采用容量法测定硼铁矿及硼镁铁矿中硼含量,通过选择最佳分析条件,可满足科研和生产对硼元素的分析要求。试样用盐酸、硝酸分解,用碳酸钡分离铁、锰、铝等干扰元素,在酸性溶液中煮沸驱除CO_2,调节PH为7时,在甘露醇存在下,以酚酞作为指示剂,以NaOH标准溶液滴定。测定范围0.20―20.00﹪。Adopting volumetric method to determine boron content in boron ores and ludwigite, in terms of selecting optimal analysis condition, can meet the needs of scientific research and production for boron element analysis. Resolve the sample with hydrochloric acid and nitric acid, separate the interference elements with barium carbonate, boil and remove the carbon dioxide.When the PH is 7, with mannitol, use phenolphthalein as indicator, titrate with sodium hydroxide, determination range： 0.2--20.00%.

关 键 词：硼 容量法 

分 类 号：TD87[矿业工程—非金属矿开采]