【摘要】 <正> 铅离子选择电极在配体过量的条件下对游离铅离子的响应灵敏度很高,应用这种电极已测定了铅-氟配合物的各级稳定常数,本文继续研究了铅电极测定铅-氯,铅-溴配合物稳定常数的方法并在数据处理上将经典的逐级外推法与徐光宪的对数作图法结合起来提高了测定各级稳定常数的可靠性。更多还原

【Abstract】 A potentiometric technique is described for determining the stability constants of lead-chloride and lead-bromide complexes using lead ion selective electrode. The last two step stability constants were calculated with Fi vs [X] plot and the others with log Fi vs [X] plot on same system. According to this method of treating the experimental data, the results obtained are more reliable. The stability constants of lead(Ⅱ) complexes with chloride and bromide were investigated at different ion strength (NaClO4 , 20℃) and the results obtained are in good agreement with lead-amalgam potentiometric results.更多还原