作　　者： ; ;

机构地区： 南昌大学理学院应用化学研究所

出　　处： 《分析测试学报》 1994年第5期86-89,共4页

摘　　要： 研究了新合成的试剂７－（２，４－二羟基苯偶氮）－８－羟基喹啉－５－磺酸（简称ＤＨＢ─８Ｑ５Ｓ）荧光光度法测定铝（Ⅲ）的反应条件，铝（Ⅲ）与试剂在ｐＨ５．００～５．７５的乙酸／乙酸钠缓冲溶液中形成１＋１型配合物并呈现荧光，其最大激发波长／发射波长λ_（ｅｘ）／λ_（ｅｍ）＝５２２／５７０（ｎｍ），检测下限为３×１０^（－８）μｇ／ｍＬ，考察了共存离子的干扰，并用于样品分析，结果满意。 DHB-8Q5S was cmployed as a new analytical reagent for fluorimetric determation of aluminum.The optimal conditions for fluorescent complex formation of DHB-8Q5S with Aluminum(Ⅲ)were established.A1+1 type complex was formed withλ_(ex)/λ_(em) of 522/570nm at pH5.00～5.75. Better linearity of calibration curves was obstained and the limit of detection for A1(Ⅲ)was 3×10￣(-8)μg/mL. The effect of foreign ions were studied,the method was applied to analyse sample. Results were satisfactory.

关 键 词： 荧光试剂 铝 配合反应

领　　域： [理学] [理学]