【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。讨论了取代基种类及位置的影响更多还原

【Abstract】 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更多还原