微生物膜电极法生物化学需氧量分析仪校准方法  

Calibration method of biochemical oxygen demand meters with microbial membrane electrode

作　　者：贾会 许建军 尚梦帆 Jia Hui;Xu Jianjun;Shang Mengfan(Henan Province Institute of Metrology,Zhengzhou 450008,China)

机构地区：[1]河南省计量科学研究院,郑州450008

出　　处：《化学分析计量》2021年第7期74-78,共5页Chemical Analysis And Meterage

摘　　要：探讨了微生物膜电极法生物化学需氧量分析仪的校准方法。主要校准项目及技术指标包括生物化学需氧量示值误差不超过±10%、生物化学需氧量重复性不大于10%、计时误差不超过±3 s、温度示值误差不超过±2℃。对不同厂家的微生物膜电极法生物化学需氧量分析仪进行了校准,该校准方法可行,技术指标要求合理。给出了校准结果不确定评定实例,为不确定评定提供参考。The calibration method of biochemical oxygen demand(BOD)meters with microbial membrane electrode method was discussed.The main calibration items and technical index include the indication error of BOD was not more than±10%,the repeatability of BOD was not more than 10%,the timing error was not more than±3 s,and the temperature indication error was not more than±2℃.The BOD meters made by different manufacturers were calibrated,which showed that the method was feasible,and the technical index requirements were reasonable.The example of uncertainty evaluation of calibration results was given to provide reference for uncertainty evaluation.

关 键 词：微生物膜电极法 生物化学需氧量 校准 示值误差 不确定度 

分 类 号：O657.1[理学—分析化学]