作　　者： ; ;

机构地区： 陕西师范大学化学化工学院化学系

出　　处： 《分析化学》 1995年第3期299-301,共3页

摘　　要： 本文提出用硫胺素-高碘酸钠作为指示反应,流动注射光导纤维动力学荧光法测定痕量锰.检测限达 0.4 ng/mL;相对标准偏差小于 1％;采样频率为 45样次/h.用于直接测定纯铝及铝合金的痕量锰,结果满意. The fluosescence spectrophotometric determination of trace manganese ( Ⅱ ) by optical fiber kinetic method with FIA was developed using sodium periodate and thiamine as an indicating reaction. The instability of thiamine as a kinetic fluorescent indicator has been overcome. The detection limit of manganese ( Ⅱ ) is 4. 0×10-10 g/mL, and the linear relationship between the fluoresence intensity and the concentration of manganese ( Ⅱ ) is found in the range of 0. 0082-1. 0 ug/mL; the relative standard deviation is less than 1%, and the sampling speed is 45 samples/h. The proposed method can directly be applied to the determination of manganese in aluminum and aluminum alloy.

关 键 词： 锰 催化动力学 流动注射分析 光导纤维光谱法

领　　域： [理学] [理学] [理学] [理学]