摘要
对火焰原子吸收光谱法测定铅锌混合精矿中氧化镁的仪器工作条件,基体、杂质干扰,释放剂和酸度等进行了试验。在氯化锶和EDTA的盐酸介质中,采用空气-乙炔火焰测定氧化镁,不受铅、锌基体的干扰。方法简便、准确,线性范围为0～3μg/mL,相关系数r=0.9997,加标回收率为98.8％～102.6％,RSD<5.0％,测定范围为0.01％～3％。
The conditions including apparatus parameters, matrix, impurity interference, releasing agent and acidity for the determination of magnesia by flame atomic absorption spectrophotometry have been investigated. It was found that, in hydrochloric acid agent in the presence of strontium chloride and EDTA, the determination of magnesia by air-acetylence flame was not interfered by lead or zinc matrix. This method is simple and accurate. The linearity is in the range of 0~3μg/mL with a relative coefficient of 0.9997. Recoveries are in the range of 98.8%~102. 6% and RSD is less than 5. 0% . The measurement range is 0.01% ~ 3% .
出处
《化学分析计量》
CAS
2003年第5期39-40,共2页
Chemical Analysis And Meterage
关键词
火焰原子吸收光谱法
测定
铅锌混合精矿
氧化镁
magnesia, lead and zinc bulk concentrate, flame atomic absorption spectrophotometry, determination
