科研之友
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摘要
The highly effective TiO2 nanotube arrays (TNAs) has excellent photoelectrocatalytic properties. A novel method for COD determination of surface water in a thin-cell reactor using a TNAs electrode was described. The result showed that this method can be used to accurately determine COD in a short time. The linear equation was as follows; y = -0.18105x +0.15444, r = 0.9903, with a detection limit of 0.30 mg/L and a suitable pH range of 4 - 10. The COD value was independent of the concentration of Ccl-, the time of determination was less than 2 min and the RSD is less than 5%. When this method was applied to determine the COD of wastewater samples, the disadvantages of potassium dichromate method (CODCr) and potassium permanganate method (CODMn) can be overcome.
- 出版日期2010-8
- 单位上海交通大学
