摘要
研究了高氯酸氧化-硫酸亚铁铵滴定法测定锰渣中锰含量的主要影响因素。采用磷酸分解试样,通过控制试样质量和磷酸用量的比例,优化确定了最佳溶样温度和溶样时间,探讨了放置冷却时间对测定结果的影响程度,分析了共存离子的干扰。建立了硫酸亚铁铵滴定法测定锰渣中的锰含量的方法,方法用于对锰渣标准物质和样品进行分析,测定结果的相对标准偏差为0.21%~0.35%,准确度和精密度均能满足锰渣中锰含量的分析要求。
The main influencing factors of determination of manganese content in manganese slag by perchloric acid oxidation ammonium ferrous sulfate titration were studied.The H3PO4 was used for sample decomposition by controlling the proportion of sample quality and phosphoric acid content,the optimum solution temperature and time were determined,the influence of cooling time on the test results was discussed,the interference of coexisting ions was analyzed.A method for the determination of manganese in manganese slag by ammonium ferrous sulfate titration was established,which was used to analyze the reference materials and samples of manganese slag.Accuracy and precision of the method can meet the analysis requirements of manganese content in manganese slag.
作者
王小强
程宝成
张磊
梁倩
余文丽
赵亚男
WANG Xiaoqiang;CHENG Baocheng;ZHANG Lei;LIANG Qian;YU Wenli;ZHAO Ya’nan(General Institute for Non-ferrous Metals and Geological Exploration of Henan Province,Zhengzhou,Henan 450052,China;Key Laboratory of Deep Ore-prospecting Technology Research for Non-ferrous Metals of Henan Province,Zhengzhou,Henan 450052,China;Joint Laboratory of Henan Province Non-ferrous Metals Geological and Mineral Resources Bureau,Zhengzhou,Henan 450000,China)
出处
《中国无机分析化学》
CAS
2020年第5期19-23,共5页
Chinese Journal of Inorganic Analytical Chemistry
基金
河南省2016年度“两权价款”地质科研项目(2015199203)。
关键词
锰渣
锰
硫酸亚铁铵
滴定法
manganese slag
manganese
ammonium ferrous sulfate
titration
