二甲氧基羟基苯基荧光酮光度法测定生物样品中锗  

PHOTOMETRIC DETERMINATION OF GERMANIUM IN BIOLOGICAL SAMPLES WITH DIMETHOXYHYDROXYPHENYLFLUORONE (DMOHPF)

作　　者：康新平[1] 潘教麦[2] 

机构地区：[1]新疆医科大学药学院,乌鲁木齐830054 [2]华东师范大学化学系

出　　处：《理化检验（化学分册）》2003年第11期636-638,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究了二甲氧基羟基苯基荧光酮光度法测定锗。在H3PO4 介质中 ,TritonX 10 0存在时 ,锗与二甲氧基羟基苯基荧光酮形成 1∶2橙红色络合物 ,最大吸收在 5 0 5nm波长处 ,表观摩尔吸光系数为 1.8× 10 5L·mol- 1·cm- 1,并且具有灵敏度高、选择性好的特点。当锗含量在 0～ 7μg/2 5ml范围内符合比耳定律。已用于茶叶。In a phosphoric acid medium of c (H 3PO 4) 1.8～4.2mol·L -1 , germanium(Ⅳ) reacts with the new chromogenic reagent DMOHPF in the presence of Triton X 100 to form an orange red complex, with its mole ratio of (Ge∶R) 1∶2 and having its absorption maxima at 505nm. The molar absorptivity ( ε ) is found to be 1.8×10 5L·mol -1 ·cm -1 . Beer′s law holds in the range of 0 to 7μg of Ge(Ⅳ) per 25ml of solution. This method has been used satisfactorily in the determination trace amounts of germanium in tea and in some medicines.

关 键 词：光度法 二甲氧基羟基苯基荧光酮 锗 茶叶 药物 党参 生物样品 

分 类 号：O657.31[理学—分析化学]