自制氧化剂和催化剂测定废水中化学需氧量的探讨

Study on the Determination of Chemical Oxygen Demand in Wastewater by Self-made Oxidant and Catalyst

自制快速法测定化学需氧量(COD_(Cr))所需的氧化剂和催化剂,比市场上购买的专用氧化剂和催化剂大大降低分析成本,分析结果准确可靠。试验结果表明:使用自制氧化剂和催化剂测定COD_(Cr),样品加标回收率在98%~103%,与专用氧化剂和催化剂测定化学需氧量(COD_(Cr))结果一致,无显著性差异,可用于废水中COD_(Cr)的控制分析。

The oxidant and catalyst applied for the rapid determination of chemical oxygen demand( COD_(Cr)) had lower cost than those on market. The results were accurate and reliable. The test results showed that using self-made oxidant and catalyst obtained the similar results as the special oxidant and catalyst. Its recovery rate was 98% ~ 103%,which indicated no significant difference. Therefore,the self-made reagents could be applied for determination of COD_(Cr).