| 安培法直接测定水体中COD的方法研究 |
| |
| 引用本文： | 杜宝中,路蕾蕾,唐建红,孙莎,屈敏佳.安培法直接测定水体中COD的方法研究[J].西安理工大学学报,2011,27(1):69-73. |
| |
| 作者姓名： | 杜宝中 路蕾蕾 唐建红 孙莎 屈敏佳 |
| |
| 作者单位： | 西安理工大学理学院,陕西西安,710048 |
| |
| 基金项目： | 陕西省工业攻关计划资助项目 |
| |
| 摘 要： | 以Ti/PbO2-Pt-Hg/Hg2Cl2为电极组成三电极体系,采用安培法直接测定水体中葡萄糖COD值。优化测试条件为:工作电极电位1.4 V,电解液浓度0.02 mol/L,电解时间1.5 min。工作电极的电流响应值与COD值在标准溶液20～200 mg/L范围内呈线性关系,检出限为10 mg/L。通过增大电位气泡更新法来再生工作电极具有简便、快速,重现性好的优点,当其与标准法对照用于实际水样COD的测定时相对误差<3%。
|
| 关 键 词： | Ti/PbO2电极 安培法 化学需氧量(COD) 再生 |
Research on the Determination of COD in Water by Amperometry |
| |
| DU Baozhong,LU Leilei,TANG Jianhong,SUN Sha,QU Minjia.Research on the Determination of COD in Water by Amperometry[J].Journal of Xi'an University of Technology,2011,27(1):69-73. |
| |
| Authors: | DU Baozhong LU Leilei TANG Jianhong SUN Sha QU Minjia |
| |
| Institution: | DU Baozhong,LU Leilei,TANG Jianhong,SUN Sha,QU Minjia (Faculty of Science,Xi'an University of Technology,Xi'an 710048,China) |
| |
| Abstract: | A three-electrode system with Ti/PbO2 electrode as working anode is directly used to detect COD in water by amperometry.The optimized experimental conditions are: working electrode potential is 1.4 V;electrolyte concentration is 0.02 mol/L;determination time is 1.5 min.The current value on the anode in a standard solution with different concentrations of glucose appears to have the linear relation with COD in the range of 20~200 mg/L,whose detection limit is 10 mg/L.The surface of Ti/PbO2 electrode is refre... |
| |
| Keywords: | Ti/PbO2 electrode amperometry COD refresh |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
