【摘要】 研究了氯离子和浊度对EW-2100型紫外吸收水质自动在线监测仪测定结果的影响。结果表明,氯离子浓度在30000mg/L以内没有影响,浊度在12 NTU以内没有影响,但浊度超过12 NTU时,仅靠双光束扣除背景不能定量消除干扰,需借助重铬酸钾标准方法校正仪器。校正后,浊度在100 NTU以下不干扰测定。仪器适用于污染源化学需氧量的测定。更多还原

【Abstract】 The influence of chloride and turbidity on the measurement results of EW-2100 UV-absorption water quality automatic on-line monitor were studied.Results showed that the concentration of chloride within 30000mg/L and turbidity within 12 NTU did not interfere the results.But when the turbidity was larger than 12 NTU,the interference could not be eliminated only by the double beam technique and background subtraction and the instrument must be calibrated by standard dichromate method.After calibration,the turbidity within 100 NTU did not interfere.The instrument is suitable for measuring COD of pollution sources.更多还原