摘要
制备了一种含硫脲基螯合树脂的碳糊修饰电极 ,并将其用于矿样中痕量钯的测定。通过实验选定了电极预处理及测定的最佳条件 ,并对影响峰电流的各种因素及电极的性能进行了讨论。在最佳条件下 ,测定钯的浓度范围为 8.66× 1 0 - 9～ 8.66×1 0 - 5mol/L,检出限为 9.84× 1 0 - 10
A chemically modified carbon paste electrode containing thiourei chelating resin for the determination of trace pallidium are studied. In a pH 1 KCl HCl buffer solution, pallidium gives a sensitive reduction wave at 0.4 V(vs.SCE),which can be used to determine trace pallidium in mineral samples. The linear range and detection limit are 8.66×10 -9 ~8.66 × 10 -5 mol/L and 9.84 × 10 -10 mol/L, respectively.
出处
《分析科学学报》
CAS
CSCD
北大核心
2002年第1期22-26,共5页
Journal of Analytical Science
关键词
测定
化学修饰碳糊电极
微分脉冲伏安法
岩石
矿物
钯
螯合树脂
Chemically modified
Carbon paste electrode
Chelating resin
Differential pulse voltammetry
Pallidium
