偶氮胂显色剂离解常数及其与镧配合物稳定常数的测定  

Determination of dissociation constants of arsenazo and stability constants of lanthanum arsenazo complexes in aqueous solution

作　　者：王麟生[1] 乐美卿[1] 谢怡 孙燕 吴斌才[1] 张太森[1] 

机构地区：[1]华东师范大学化学系

出　　处：《化学试剂》1998年第4期205-206,243,共3页Chemical Reagents

摘　　要：用分光光度法和电位滴定法测定了部分偶氮胂显色剂的离解常数。与已报道的偶氮膦显色剂进行了比较。测定了与稀土镧元素的稳定常数。The dissociation constants of some arsenazo reagents in aqueous solution were measured by spectrophotometric and potentiometric methods and stability constants of lanthanum arsenazo complexes in aqueous solution were measured by spectrophotometric method and compared with results of phosphonazo reported in the literature The effect of species and position of substituting group on dissociation constants and stability constants was discussed

关 键 词：偶氮胂 显色剂 稳定常数 镧配合物 测定 

分 类 号：O614.331[理学—无机化学] O657.303[理学—化学]