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测定锰常用的方法是高锰酸钾比色法,虽然它的选择性好,但灵敏度低,不适宜微量锰的测定。国内已研究出高灵敏度测定微量锰的方法,如过氧化氢共存下水杨醛肟法和2-(5-溴-吡啶偶氮)5-二乙氨基苯酚光度法。近年来,采用酸性三苯甲烷染料进行不同金属离子的光度测定已得到广泛应用。在这类试剂中,苯基荧光酮(全名2,3,7-三羟基-9-苯基荧光酮,俗名苯芴酮)是一种重要的显色试剂,它和金属离子的显色反应,在加入表面活性剂形成三元络合物时具有较高的灵敏度。除了已报导的用苯基荧光酮测定锡、锗、镓
Manganese commonly used method is potassium permanganate colorimetric method, although its selectivity is good, but the sensitivity is low, not suitable for the determination of trace manganese. China has developed a highly sensitive method for the determination of trace manganese, such as the coexistence of hydrogen peroxide salicylaldoxime method and 2- (5-bromo-pyridylazo) 5-diethylaminophenol spectrophotometry. In recent years, the use of acid triphenylmethane dyes for the determination of different metal ions has been widely used. Among these reagents, phenylfluorone (full name 2,3,7-trihydroxy-9-phenylfluorone, common name phenyl fluorenone) is an important chromogenic reagent, which is colored with metal ions The reaction, with the addition of surfactants to form ternary complexes with higher sensitivity. In addition to the reported phenylfluorone determination of tin, germanium, gallium