论文部分内容阅读
Analyst杂志介绍了一种基于用特殊光敏剂玫瑰红(Rose Bengal)使亚硫酸盐光活化氧化来测定Mn~Ⅱ的方法。在光敏乙酰丙酮活化的反应中,Mn~Ⅱ的反应性能比只有化学活化的体系高近10倍。Mn~Ⅱ的测定不会受大量过剩的Co~Ⅱ、Cu~Ⅱ、Ni~Ⅱ、Cr~Ⅱ、Cd~Ⅱ或Fe~Ⅲ的干扰。所推荐的方法的检测限为0.3ppb,相对标准偏差为5.5％左右。根据分光光度测定值进行了可能反应机理的假设。
Analyst magazine describes a method for the determination of Mn ~ II based on the photoactivated oxidation of sulphite using the special photosensitizer Rose Bengal. In the photoactivated acetylacetonation reaction, the reactivity of Mn ~ Ⅱ is 10 times higher than that of the chemically activated system. The determination of Mn ~ Ⅱ was not disturbed by a large amount of excess Co ~ Ⅱ, Cu ~ Ⅱ, Ni ~ Ⅱ, Cr ~ Ⅱ, Cd ~ Ⅱ or Fe ~ Ⅲ. The proposed method has a detection limit of 0.3 ppb and a relative standard deviation of 5.5%. Based on the spectrophotometric determination of the possible reaction mechanism.