摘 要:在HCL的溶液介质中,利用微量Mn对KBrO3氧化乙基橙的褪色反应具有催化作用,通过测量510 nm吸光度的变化,建立催化动力学测定微量Mn的方法。在波长510 nm时,锰的线性范围0~~2.8×10-9 g/ml,检出限为2.76×10-11 g/ml。探讨了有关的反应条件。考察了近20多种离子的共存对测定的影响。31622 毕业论文关键词:锰;乙基橙;动力学光度法
Ethyl Orange with Potassium Bromate Catalytic Discoloration Spectrophotometry Determination of Trace Manganese in Food
Abstract:HCL solution medium, the use of trace Mn oxidation of ethyl orange KBrO3 have catalytic fading reaction by measuring the change in absorbance 510nm establish Catalytic determination of trace Mn approach.At a wavelength of 510nm,The linear range of manganese 0 ~~ 2.8 × 10-9g / ml, the detection limit is 2.76 × 10-11g / ml.Discussion about the reaction conditions.The effects of the coexistence of nearly 20 kinds of ions on the determination.
Key Words: Manganese;Ethyl orange; Kinetic
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