Principle, instrument structure and operating steps of HACH COD Online Analyzer were described in using of petrochemical wastewater environmental monitoring of Sinopec Jinling Company. The reasons causing trouble were analyzed and troubleshooting was given. It made suggestion for daily operation inspection and corresponding quality control measures to ensure validity of auto-monitoring data.%介绍了美国哈希公司COD在线分析仪的工作原理、仪器结构与测量步骤,以及在中石化金陵分公司污染源在线监测系统中的应用.分析了仪器常见故障产生的原因与排除方法,提出应注重仪器的日常运行检查,采取相应的质量控制措施,确保自动监测数据的有效性.
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