【摘要】 <正> 2,3,7-三羟基-9-苯-6-芴酮(简称苯基萤光酮)与金属离子的显色反应已有报导,沈含熙等人还发表了2,3,7-三羟基-9-取代萤光酮(简称三羟基萤光酮,作为显色剂的胶束增敏分光光度法的综述,在表面活性剂存在下的酸性介质中,三羟基萤光酮能与高价的亲氧元素发生显色反应。我们发现,在表面活性剂存在下的碱性介质中,二溴苯基萤光酮(DBPF)能与二价金更多还原

【Abstract】 The stability of the complex of nickel with 4,5-dibromophenyl-fluorone in the presence of CTMAB in a H3BO3-Na2CO3 buffer (pH9-10.2) has been studied. A reddish violet complex with a molar component ratio of Ni:DBPF=l:2 (at 625 nm) was formed. Beer’s Jaw was obeyed in the range 0.04-0.24 ppm of nickel.更多还原