1-[2,3,5-三氮唑偶氮]-2-萘酚的合成及其与镉显色反应研究  

Synthesis of 1-[2,3,5-triszolyszo]-2-Naphthol and Its Color Reaction with Cadmiun

作　　者：叶巧云[1] 蒋华江[1] 汤福隆[2] 

机构地区：[1]台州学院化学系,台州317000 [2]浙江大学化学系,杭州310028

出　　处：《分析科学学报》2002年第5期406-408,共3页Journal of Analytical Science

基　　金：浙江省教育厅科研启动基金 ( No.972 0 1)

摘　　要：合成了 1 -[2 ,3 ,5-三氮唑偶氮 ]-2 -萘酚 (简称 TNAN) ,研究了它与镉显色反应。结果表明 :在 Triton X-1 0 0存在下 ,p H7.0～ 8.7时 Cd( )与试剂形成 1∶ 2的红色络合物 ,ε=1 .79× 1 0 5L· mol- 1· cm- 1,镉浓度在 0～ 0 .8mg/ L范围内服从比耳定律。The synthesis of a color reagent 1-[2,3,5-triazolyazo]-2-naphthol(TZAN) and its color reation with cadmium have been studied.The results show that in the presence of Triton X-100 and in the mediun at pH 7.0～8.6, TZAN reacts with Cd(Ⅱ) to form a stable complex with the molar absorptivity of 1.79×10 5 L·mol -1·cm -1 at 522.6 nm. Beers law is obeyed in the range of 0～0.8 mg/L. The method has been directly applied to the spectrophotometric determination of samples with satisfactory results.

关 键 词：合成 显色反应 1-[2 3 5-三氮唑偶氮]-2-萘酚 分光光度法 镉 水 人发 分析 显色剂 

分 类 号：O614.242[理学—无机化学] O657.32[理学—化学]