【摘要】 本文报导了在0.1%的乙二胺介质中,在悬汞电极上可得到一灵敏的微分脉冲阴极溶出峰电流.峰电位约为-0.21伏(相对于Ag—Agcl电极)。CN~-浓度在0.01—9.0ppm范围内,与峰电流有线性关系.其检测限为0.1ppb。不经分离,可直接用于电镀废水和其它水质中痕量氰化物的测定.更多还原

【Abstract】 This paper reports a method for the determination of cyanide ion by differential pulse cathodic stripping voltammetry. A Sensivity peak current can be obtained in the 0.1% ethylenediamine medium. The peak potential is about-0.21v(vs. Ag-Agcl). A linear relationship between the peak current and the concentration of cyanide ion in the range of 0.01-9.0ppm isobserved. The detection limit of cyanide ion is 0.1ppb.The method can be used to determine trace of CN-in wastwater and electroplating wastc.更多还原