微分脉冲溶出伏安法测定五氯硝基苯  

DETERMINATION OF PENTACHLORONITROBENZENE BY DIFFERENTIAL-PULSE STRIPPING VOLTAMMETRY

作　　者：王爽[1] 王桂芬[1] 林晓华[1] 

机构地区：[1]延边大学理学院化学系,延吉133002

出　　处：《化学分析计量》2009年第2期30-32,共3页Chemical Analysis And Meterage

摘　　要：研究五氯硝基苯的电化学性质,利用循环伏安法(CV)对五氯硝基苯标准溶液初步扫描,得到一组可逆的氧化还原峰,峰电位分别为100mV与153mV(vs.Ag/AgCl)。其线性范围为3.0×10-6～1.0×10-4mol/L(r=0.9993),检出限为2.6×10-7mol/L。用该方法测定了白菜、土壤及土壤水样中的五氯硝基苯样品,平均加标回收率为92.0%～109.7%,RSD不大于3%(n=5)。初步探讨了五氯硝基苯的电极反应机理。A simple voltammetric method for the determination of pentachloronitrobenzene was developed. The voltammetric behaviors of pentachloronitrobenzene at a glassy carbon electrode was studied by cyclic voltammetry,reversible oxidative and reductive peaks of pentachloronitrobenzene were obtained at the potential of 100 mV and 153 mV(vs.Ag/AgCl). The peak current was linear with the concentration of pentachloronitrobenzene ranging from 3.0×10-6 to 1.0×10-4 mol/L (r=0.9993). The detection limit was 2.6×10-6 mol/L....

关 键 词：五氯硝基苯 微分脉冲溶出伏安法 反应机理 

分 类 号：X839.2[环境科学与工程—环境工程]