摘要
本文基于在邻菲罗啉活化下，锰（Ⅱ）对高碘酸钾氧化罗丹明Ｂ褪色的催化作用，建立了痕量锰的反相流动注射分析（ｒＦＩＡ）方法。方法的线性范围为０～５０μｇ／Ｌ，检测下限为０．７μｇ／Ｌ锰（Ⅱ）。对２０μｇ／Ｌ锰（Ⅱ）测定九次的相对标准偏差为１．８％，进样频率不少于６０次／ｈ．方法应用于水样和标准镁合金样品分析，结果满意。
Arapid catalytic spectrophotometricmethod for thedetermination of trace man-ganese based on manganese catalyzing deco-loration reaction of rhodamine B with potas-sium periodate in the presence of1,10-phenanthroline has been established by re-verse flow injection technique. The linearrange is 0～50μg/L and the detection limit is0.7μg/L, The relative standard deviation is1.8%obtained from 9 standard solutionscontaining 20μg/Lof manganese. More than60 samples can be analysed pe hour.Themethod was applied to the determination ofmanganese in natural waters and magnesiumalloys.
出处
《分析试验室》
CAS
CSCD
北大核心
1995年第6期31-33,共3页
Chinese Journal of Analysis Laboratory
关键词
光度法
镁合金
锰
水样
Reverse flow injection analy-sis
catalytic spectrophotometry
rhodamineB Mn
maganseium alloys
