【摘要】 通过对照试验证明氯气校正可以去除高氯离子对CODCr测定的干扰。事实上,对于特定的高氯废水,实验发现CODCr与实际样品的Cl-含量相关。氯气校正测定的CODCr可用国标方法测定的CODCr和Cl-含量表示。分别以M估计和最小二乘建立了校准方程。进而,实验结果对于存在个别异常值的体系前者相对后者有所改善。更多还原

【Abstract】 Contrast tests have shown that chlorine calibration can eliminate the interference of high content of Cl- in the determination of COD_ Cr. In fact, so far as specific high chlorine wastewater is concerned, to it has been found that the COD_ Cr is related to Cl- content in actual samples.Making use of COD_ Cr determined by national standard method and Cl- content in wastewater samples can give expression to COD_ Cr determined by chlorine correction method. The calibration equation can be obtained with M-estimation and least square respectively.What’s more, the results of the test show that the former can be an improvement on the latter for the system with individual abnormal values.更多还原