水环境监测过程中pH值测定新旧标准方法对比分析

Comparative Analysis of the New and Old Standard Methods for Determination of pH in the Process of Water Environment Monitoring

对生态环境部发布的水质pH的测定电极法(HJ 1147—2020)标准方法和国家标准方法水质pH的测定玻璃电极法(GB 6920—1986)进行比对分析,新标准方法适用范围更广,完善了干扰和消除方法和措施,分析过程和样品测定更加细化,更具有操作性;增加了六家实验室结果精密度与准确度内容和质量保证和质量控制措施,测定结果更准确。

Compare and analyze the standard method of pH measurement of water quality(HJ 1147-2020)and the national standard method of pH measurement of water quality(GB 6920-1986)issued by the Ministry of Ecology and Environment.The new standard method has a wider application range.Improved interference and elimination methods and measures,the analysis process and sample determination are more detailed and more operability;the precision and accuracy of the results of six laboratories and the quality assurance and quality control measures have been added,and the measurement results are more accurate.