摘要
研制了一种新颖的超薄碳糊膜银离子传感电极 .在镍铬合金基体上通过嵌入碳糊薄膜而制得该电极 .用电位法研究了电极的响应特性 ,电极电位E (mV)与银离子浓度在 1.0× 10 -6～ 1.0× 10 -2 mol/L范围内呈良好的线性关系 ,相关系数为 0 .9998,检测限为 6.0× 10 -7mol/L ,对银离子的响应斜率为 5 8.3～ 60 .3mV/ ( -logcAg+ ) .电极制作简单、费用很低、稳定性良好 。
A novel super-thin carbon paste film electrode was introduced as a silver ion sensor. The electrode was prepared by inlaying carbon paste onto the surface of nickel-chromium substrate. The electrode response characteristics were investigated by potentiometry. The calibration curve of the electrode shows a linear potentiometric response to Ag+ in the range of 10(-6) similar to 10(-2) mol/L with a slope of 58.3 similar to 60.3 mV/(- log c(Ag+)) - The limit of detection is 6.0 x 10(-7) mol/L. The electrode described in this paper is very simple, stable and unexpensive. It was used as an indicator electrode for the determination of Ag+.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2004年第13期1237-1241,J003,共6页
Acta Chimica Sinica
基金
河南省自然科学基金 (No.31 1 0 2 1 0 0 0 )
河南省高校环境科学与工程重点学科开放实验室资助项目
