• 更多栏目

    陈硕

    • 教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:环境学院
    • 学科:环境工程. 环境科学
    • 办公地点:大连理工大学环境学院B717
    • 联系方式:0411-84706263
    • 电子邮箱:shuochen@dlut.edu.cn

    访问量:

    开通时间:..

    最后更新时间:..

    Sensitive amperometric determination of chemical oxygen demand using Ti/Sb-SnO2/PbO2 composite electrode

    点击次数:

    论文类型:期刊论文

    发表时间:2011-07-05

    发表刊物:SENSORS AND ACTUATORS B-CHEMICAL

    收录刊物:SCIE、EI

    卷号:155

    期号:1

    页面范围:114-119

    ISSN号:0925-4005

    关键字:Chemical oxygen demand; Ti/Sb-SnO2/PbO2 electrode; Amperometric detection

    摘要:A novel Ti/Sb-SnO2/PbO2 composite electrode was fabricated for COD determination. The new electrode configuration improved the sensitivity of the amperometric method apparently. Effects of common experimental parameters, such as applied potential, pH and concentration of the electrolyte on its analytical performance were investigated. A linear range of 0.5-200 mg L-1 COD and a detection limit (a signal-to-noise ratio of 3) of 0.3 mg L-1 were achieved under optimized conditions. The experiments for detecting COD in model samples and real samples were carried out to evaluate the electrode's performance. The obtained results were in good agreement with those determined by the standard dichromate method. with a relative error less than 12%. (C) 2010 Elsevier B.V. All rights reserved.