离子选择性电极法测定水中的铅

Determination of Pb^(2+) in water with ion selective electrode

利用铅离子选择性电极研究了测定铅的条件,并测定了该电极的性能参数。在1.0×10-7~1.0×10-4mol/L范围内铅的浓度的对数与电位呈线性关系,检出限为8.0×10-8mol/L。并用该法测定了水中铅的含量,平均加标回收率为93.3%。

A new method was established for the determination of Pb^2＋ with ion selective electrode. Its property behaviours was determined.The linear relationship between E and logc was held in the rang of 1.0×10^-7～1.0×10^-moL/L. The detection limit is down to 8.0×10^-mol/L. It was used to determine the content of Pb^2＋ in water. The recovery is 93.3 %.