摘要
在ＨＡｃ－ＮａＡｃ介质中。溴化十六烷基吡啶（ＣＰＢ）对锰（Ⅱ）催化高碘酸钾氧化甲基蓝的褪色反应有强烈的增敏作用，本文研究了影响其反应速度的最佳条件，建立了测定锰的新催化光度法。方法线性范围为４．０ｘ１０－４－８．０ｘ１０－３ｍｇ／Ｌ，检测下限为２．０７ｘ１０－５ｍｇ／Ｌ，可用于面粉和人尿中锰的测定。
A new catalytic spectrophotometric system for the determination of trace manganese(Ⅱ)has been developed.The method is based on the catalytic effect of Mn(Ⅱ) on the oxidation of methyl blue by potassium* periodate in the presence of CPB as sensitizer. The reaction mechanism has been discussed.The linear range of * determination is 4.0x10-4 - 8.0x10-3 mg/L and the detection limit is 2.07x10-5mg/L.The method can be used* for the determination of Mu(Ⅱ) in wheaten flour and urine*
出处
《冶金分析》
CAS
CSCD
北大核心
1998年第3期22-23,8,共3页
Metallurgical Analysis
关键词
锰
甲基蓝
催化动力学
光度法
Catalytic spectrophotometry, Methyl blue, Manganese(Ⅱ)
