摘要
基于Pb2+能置换出Co-EDTA络合物中的Co2+和鲁米诺-H2O2-Co2+化学发光体系相偶合,建立了简易、快速测定Pb2+的置换偶合反应流动注射化学发光新方法。在最佳的实验条件下,该方法测Pb2+的线性范围为1.0×10-7—1.0×10-5g/mL,检出限为5×10-8g/mL(3σ),对浓度为1.0×10-6g/mL的Pb2+进行了11次平行测定,其相对标准偏差为1.2%,该方法操作简单快速、灵敏度高,可用于水样中Pb2+含量的准确测定。
A novel method for simple and rapid determination of Pb（Ⅱ）replacement coupling reaction was fanded by flow injection chemiluminescence method base on Pb（Ⅱ）can replace Co（Ⅱ） in the Co-EDTA complex,and Co（Ⅱ） can couple with the luminol-H2O2 chemiluminescence system.Under the optimal experimental conditions,the linear range of the method was from 1.0×10-7 to 1.0×10-5g/mL,and detection limit（3σ）was 5×10-8g/mL,while RSD was 1.2% for determination of Pb（Ⅱ） concentration of 1.0×10-6g/mL with parallel determination for 11 times.The method has simple operation and high sensitivity,and that can be applied to accurate determination of the content of lead ions in water.
出处
《光谱实验室》
CAS
CSCD
北大核心
2011年第6期3175-3178,共4页
Chinese Journal of Spectroscopy Laboratory
基金
陕西省教育厅2010专项科研计划项目(2010JK800)
西安文理学院中青年科研基金项目(kyc201003)
关键词
流动注射
化学发光
铅离子
络合物
Flow Injection
Chemiluminescence
Lead Ions
Complex
