摘要
用三角波电流代替正弦波电流,进行交流示波极谱滴定,所得示波极谱图与正弦波结果相似。对一些离子的滴定表明,两法所得结果均在定量分析允许误差范围以内。报道了三角波交流示波极谱图的一些性质。
Triangular-wave current sweeping was used in AC oscillopolarography instead of sine-wave current. The oscillopolarogram obtained is similar to that obtained with sine-wave current. The appearance or disappearance of incision on the oscillopolarogram can be used to indicate the end-point of titration. The relationship of incision height hi to the concentration of depolarizer and current sweeping rate V are respectively as follows.hi(mV) = -0.02300 + 4.702×10^(-4)C0*^((-2/3)) hi(mV)= -0.02807 +950.68V(2/3)When V is very lower 5.0×10^(-9)mol/L Tl+ ion can be determined by this method.
作者
祁洪
马新生
高鸿
Qi Hong;Ma Xinsheng;Gao Hong(HKao)(Department of Chemistry,Nanjing University,Nanjing)
出处
《高等学校化学学报》
SCIE
EI
CAS
1988年第6期564-567,共4页
Chemical Journal of Chinese Universities
关键词
交流示波极谱
三角波电流扫描
AC Oscillopolarography
Triangular-wave current sweeping
