【摘要】 <正> 半微分电分析法是七十年代中期提出的一种新的伏安法技术,它比一般伏安法具有更高的灵敏度和更好的分辨率。对于汞膜电极阳极溶出,在其他实验条件保持不变的情况下,法拉第电流的半微分值与电压扫描速度的1.5次方成正比;而充电电流的半微分值仅与电压扫描速度的一次方成正比,因此随着电压扫描速度的提高,讯噪比也随着而提高,这对提高半微分电分析法的灵敏度是有利的。但是,一般记录式极谱仪扫描速度的更多还原

【Abstract】 In order to improve further the sensitivity of semidifferential electroanalysis and enlarge its field of application an oscilloscopic semidifferential voltamograph was designed. It is not only an instrument for the semidif ferential electroanalytical determination but also can be used as a normal polarograph. It can record derivative cyclic neopolarograms and curves of transient current vs time. This voltamograph has remarkable sensitivity and better resolution. This make it very useful in the determination of trace amounts of imputities and in the electrochemical research work. This versatile apparatus is simple in structure, excellent in reproducibility and easy in operation.更多还原