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Ti/BDD/PbO_2复合电极在化学需氧量测定中的应用

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Indexed by:期刊论文

Date of Publication:2012-05-05

Journal:环境工程学报

Included Journals:PKU、ISTIC、CSCD

Volume:6

Issue:5

Page Number:1749-1754

ISSN No.:1673-9108

Key Words:Ti/BDD/PbO2复合电极;化学需氧量;电化学测量

Abstract:以钛基掺硼金刚石为基体,采用电沉积的方法制备了Ti/BDD/PbO2复合电极,并将其用于化学需氧量(COD)的测定。采用扫描电子显微镜(SEM)和X射线衍射谱图(XRD)表征了电极的微观形貌及结构,采用电化学工作站考察了电极对有机物响应特性。实验结果表明,在1.45 V的低电位条件下,线性范围为0.5~175 mg/L,检测限为0.3 mg/L(S/N=3)。采用Ti/BDD/PbO2复合电极测定法和重铬酸钾标准方法对市政污水、食品废水及印染废水的对比结果表明,2种方法的相对误差小于10%,具有良好的一致性。

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