四氧化三锰中微量磷的快速测定研究  

Rapid Determination of Trace Phosphorus in Trimanganese Tetraoxide

作　　者：黄翔 李娟 赵凯 HUANG Xiang;LI Juan;ZHAO Kai(Hunan Special Metal Materials Co.,Ltd.,Changsha,Hunan 410000,China)

机构地区：[1]湖南特种金属材料有限责任公司,湖南长沙410000

出　　处：《中国锰业》2023年第5期85-87,共3页China Manganese Industry

摘　　要：用盐酸和硫酸对样品进行前处理,在硫酸介质中,用抗坏血酸为还原剂,以乙醇为稳定剂,当磷与钼酸铵、硝酸铋出现蓝色络合物的显色反应后能快速测定四氧化三锰产品中磷的含量。研究结果表明,磷量在0~10μg/50 mL范围内线性良好,遵守比耳定律,加标回收率达98.7%~104.9%,相对标准偏差是1.64%~4.04%。此方法操作简单、快速稳定,结果准确可靠,能够满足测定要求。Hydrochloric acid and sulfuric acid are used to pretreat the sample.In the sulfuric acid medium,ascorbic acid is used as the reducing agent,and ethanol is used as the stabilizer.When phosphorus reacts with ammonium molybdate and Bismuth(III)nitrate to form a blue complex,the content of phosphorus in trimanganese tetraoxide can be quickly determined.The results show that the phosphorus content is linear in the range of 0~10μg/50 mL,and Beale’s law is obeyed.The spiked recovery rate reaches 98.7%~104.9%,and the relative standard deviation is 1.64%~4.04%.This method is fast,stable and easy to operate with accurate and reliable results,and can meet the measurement requirements.

关 键 词：四氧化三锰 磷 分光光度法 铋磷钼蓝 快速测定 

分 类 号：TM271[一般工业技术—材料科学与工程] TQ137.12[电气工程—电工理论与新技术]