作　　者： ; ;

机构地区： 华南师范大学化学与环境学院化学系

出　　处： 《光谱学与光谱分析》 2000年第1期110-112,共3页

摘　　要： 本文对Fe(Ⅲ )催化过氧化氢氧化新试剂糠醛缩 7 氨基 8 羟基喹啉 5 磺酸 (简称F7A8Q5S)进行了研究 ,研究结果表明试剂F7A8Q5S本身荧光很弱 ,被氧化后呈现强荧光 ,其荧光峰为λex/λem =3 3 0 / 4 0 5(nm) ,Fe(Ⅲ )的含量在 0 0～ 4 0 0 μg·L-1范围内与荧光强度呈良好线性 ,检测下限为 4 68ng·L-1,由此建立了新试剂F7A8Q5S催化荧光测定痕量Fe(Ⅲ )的新方法 ,方法用于铸造铝合金中Fe(Ⅲ )的含量测定 ,结果满意。 This paper reports that hydrogen peroxide oxidized furfural 7 amino 8 hydroxy 5 sulfo quinoline(F7A8Q5S) under the catalysis of Fe(Ⅲ).Results indicated that the fluorescence of F7A8Q5S was weak,but that of the oxidation product was strong.The peak was at λ ex /λ em = 330/405 (nm) .The calibration curve of Fe(Ⅲ) is linear between 0 0-40 0 μg·L -1 ,and the determination limit is 4 68 ng·L -1 .So a new catalysis fluorescence analysis method was set up for the determination of trace amounts of Fe(Ⅲ),based on its catalytic effect on F7A8Q5S oxidized by H 2O 2.This proposed method has been successful applied to the determination of Fe(Ⅲ) in alloy samples.

关 键 词： 催化动力学 荧光分析法 铁 过氧化氢

领　　域： [理学] [理学] [理学] [理学]