In a solution of HAc-NaAc at pH=4.5,the second derivative polarographic waves of the Pb2+and Cd2+ with KCl-Na2C4H4O6-C6H15N-gelation systems at the potential of-0.46V and-0.64V were obtained respectively.

• 研究了Pb2+和Cd2+与KCl-酒石酸钠-三乙醇胺-明胶体系的二次导数极谱波.；在pH=4