KINETIC SPECTROPHOTOMETRIC DETERMINATION OF MANGANESE (Ⅱ) IN POLLUTED WATERS
- 化学化工－已发表论文 
[英文摘要]A kinetic spectrophotometric method has been described for the microdetermination of Mn(Ⅱ)in polluted waters, based on its catalytic effect on the periodate-phosphinate reaction. After a fixed reaction time, the surplus amount of periodate is inversely proportional to the concentration of Mn(Ⅱ). Nitrilotriacetic acid(NTA)can enhance the catalytic effect of Mn(Ⅱ)on the reaction. The linear range obtained is from 0. 2 to 9. 0 ppb. Among 20 elements tested, only Co(Ⅱ)interferes the determination. The measurement for a single run takes 9 min.