【摘要】 本文提出用硫酸锰作催化剂,以高压蒸汽消化的方式测定废水中的化学需氧量,用已知 COD 的谷氨酸标准溶液优选试样消化时的最佳条件.用此方法测定了8种实际废水样,结果与标准回流法比较,最大相对误差小于±10%,变异系数小于5%,本方法具有成本低、操作简单、能批量分析的优点.更多还原

【Abstract】 The article discusses about the determination of chemical oxygen demand in the waste water by using manganese sulfate as catalyst by the high pressure digestion method.Eight samples of waste water have been determined by the method described above.Having compared the results obtained by this method to those obtained by the reflux of silver salt（Ag₂SO₄）as catalyst,the authors found that the relative error and relative standard deviation are Less than±10% and 5%,respectively.The advant- ages of this method are.Lower cost,simple operation and a large amount of samples can be analyzed at the same time.更多还原