电镀废液中微量镍的催化光度法测定  

Determination of trace nickel in electroplating wastewater by catalytic spectrophotometry

作　　者：夏畅斌[1] 何湘柱[1] 史红文[1] 黄念东[1] 

机构地区：[1]湘潭工学院环境工程与化工新技术研究所,湖南湘潭411201

出　　处：《工业水处理》2003年第2期46-48,共3页Industrial Water Treatment

基　　金：国家自然科学基金项目(50004003);湖南省自然科学基金项目(00JJY20118)

摘　　要：利用还原型若丹明B(RRhB)与KClO3的显色反应,对含Ni2+电镀废液中痕量Ni2+进行测定。结果表明,在pH为5.3HAc-NaAc缓冲溶液中具有高灵敏的显色反应,产物的最大吸收波长为555nm,方法的检出限为4.3×10-8g L,催化程度与Ni2+量在0～0.060mg L范围内符合比耳定律,加标回收率为96.5%～104%(n=6)。本法结合萃取分离,满意地测定了电镀废液中的微量镍。The reaction of Rhodamine B (RRhB) with KClO3 is used to determine trace Ni2+ in electroplating wastewater containing Ni2+.The results show that the chromogenic reaction has high sensitivity in pH 5.3 HAc-NaAc buffer solution. The maximum absorption of the system is at 555 nm ,the detection limit of the method is 4.3×10-8 g/L for Ni2+,Beer's law accords with Ni2+ in the range of 0～0.06 mg/L and the recovery of adding standard solution is 96.5%～104%(n=6).Combined with solvent extraction separation, the method has been applied to the determination of trace Ni in electroplating wastewater with satisfactory results.

关 键 词：镍 若丹明B 催化光度法 电镀废液 

分 类 号：X781.103[环境科学与工程—环境工程] TQ153.12[化学工程—电化学工业]