新试剂胡椒基荧光酮的合成及其与铬(Ⅵ)的显色反应  

SYNTHESIS OF THE NEW REAGENT PIPERONYL FLUORONE AND THE STUDY OF ITS COLOUR REACTION WITH CHROMIUM(Ⅵ)

作　　者：欧阳婷萍[1] 王敦清[2] 周瑜湛 衷明华[2] 

机构地区：[1]中国科学院广州地球化学研究所,广州510640 [2]江西师范大学化学系

出　　处：《理化检验（化学分册）》2001年第10期446-447,450,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：介绍了新试剂胡椒基荧光酮 (PIF)的合成方法及过程。同时 ,初步研究了在CPB存在下PIF与铬的显色反应。结果表明 ,在 pH 8.5～ 10 .0的氯化铵 氨水缓冲介质中 ,Cr(Ⅵ )The synthesis of the new reagent, 9 substituted 2,3,7 trihydroxyfluorone (abbreviated as PIF), and its application to the color reaction with hexavalent chromium are reported in this paper. It is found that in an ammoniacal buffer solution of pH 8.5～10.0, a violet red complex is formed by the reaction between Cr(Ⅵ) and PIF in the presence of CPB, with it absorption maxima at 560nm.

关 键 词：吸光光度法 胡椒基荧光酮 合成 铬(Ⅵ) 分析 显色剂 显色反应 

分 类 号：O614.611[理学—无机化学] TQ421.383[理学—化学]