脉冲伏安法测定乳品废水中的Cd(Ⅱ)和Pb(Ⅱ)离子  

DETERMINATION OF TRACE LEAD AND CADMIUM IN WASTEWATER OF DAIRY INDUSTRY BY DIFFERENTIAL IMPULSE VOLTAMMETRY

作　　者：曹培华[1] 付晓涛[1] 赵薇[1] 

机构地区：[1]内蒙古大学化学化工学院,呼和浩特010021

出　　处：《环境化学》2007年第1期86-88,共3页Environmental Chemistry

摘　　要：采用差分脉冲伏安法在CH3COOH-CH3COONa底液中测定乳品工业废水中的Cd2+和Pb2+等金属离子,并讨论了支持电解质、pH值的影响及部分离子的干扰等.在pH值为3—4范围内,铅的出峰电位为-0·36V.在正确是的条件下,对乳品废水中铅和镉的回收率分别为94%—106·5%和97%—103·5%.The paper reports the method that trace lead and cadmium were determined in CH3 COOH-CH3 COONa solution by differential impulse voltammetry. The electrochemical response was characterized with respect to supporting electrolyte, pH value of the supporting electrolyte and possible ionic interferences. The method was successfully applied to determine trace lead and cadmium in wastewater of dairy industry. The peak of lead was produced at the potential of-0. 36V in pH 3-4. Analysis results of wastewater of dairy industry： reclamation ratio of lead and cadmium were 94%-106. 5% and 97%-103.5% respectively.

关 键 词：脉冲伏安法 乳品工业废水 Cd(Ⅱ) Pb(Ⅱ). 

分 类 号：X703[环境科学与工程—环境工程]