流动注射催化光度法测定痕量锰

Determination of trace mangaasse (Ⅱ) by flow injection catalytic spectrophotometry

本文研究了锰(Ⅱ)在氢氧化铵-氯化铵缓冲体系中催化过氧化氢氧化铬黑T的机理;提出并建立了采用流动注射分析技术,间歇泵合并带法测定痕量锰(Ⅱ)的流动注射催化光度法;在优化条件下方法检出限为7.0×10^(-10)g.ml^(-1),线性范围为0.0007～0.8μg.ml^(-1),分析速度为180次/小时;用标准样品对方法进行了检验,标准偏差为0.00098,有足够的准确度。用于岩矿样品的分析,获得满意结果。

The paper studies Mn^(2+) catalytic H_2 O_2 oxidation for EBT ofreaction mechanism in the system NH_4 OH-NH_4Cl. A intermittentpump merging zone flow injection cagalytical spectrophotometricanalysis for trace manganese (Ⅱ) has been established. The detec-tion limit is 7.0×10^(-10)g.ml^(-1) and linearity region for 0.0007～0.2μg·ml^(-1) and analytial velocity 180s.h^(-1). using standard sampleverification standard bias is 0.00098.