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本文介绍了用微分脉冲伏安法以悬汞电极为工作电极测定铅(Ⅱ)-精氨酸及铅(Ⅱ)-丝氨酸络合物稳定常数。研究了仪器参数及实验条件对测定的影响,在20℃、离子强度为0.50M NaNO_3介质条件下,测得了铅(Ⅱ)-精氨酸及铅(Ⅱ)-丝氨酸络合物的累积稳定常数。
This paper describes the determination of the stability constants of lead (Ⅱ) - arginine and lead (Ⅱ) - serine complex by using differential pulse voltammetry with hanging mercury electrode as the working electrode. The effects of instrument parameters and experimental conditions on the determination were studied. The cumulative stability constants of lead (Ⅱ) - arginine and lead (Ⅱ) - serine complexes were measured at 20 ℃ and ionic strength of 0.50M NaNO_3 .