环境保护科学2025，Vol.51Issue(3)：105-111,7.DOI:10.16803/j.cnki.issn.1004-6216.202404047
水环境溶解氧自动监测结果偏低原因及优化方法研究
Research on the reasons and optimization methods of low dissolved oxygen in automatic monitoring in water environment
摘要
Abstract
To improve the accuracy of dissolved oxygen(DO)automatic monitoring data in water environments,in-situ DO comparisons were conducted at typical water quality automatic monitoring stations in Hubei Province.Issues and causes of the lower automatic monitoring values compared to in-situ measurements were analyzed,and systematic optimization methods were researched.The results show that the qualification rate of in-situ comparisons for automatic online instruments was 95.6%,which accurately reflected the DO content in water bodies.Unqualified cases were mainly caused by the water sampling system,control system,and analysis system.To effectively eliminate systematic influences,it is necessary to configure water pumps meeting operational requirements,set reasonable water sampling positions,sampling times,and data collection intervals,and enhance the frequency of surrounding environment and instrument maintenance.The research on systematic optimization methods can provide methodological references for other water monitoring stations.关键词
溶解氧/自动监测/原位比对/系统优化Key words
dissolved oxygen/automatic monitoring/in-situ comparison/systematic optimization分类
环境科学引用本文复制引用
程继雄,彭聃,安堃达,王婉玉..水环境溶解氧自动监测结果偏低原因及优化方法研究[J].环境保护科学,2025,51(3):105-111,7.基金项目
湖北省环保科研项目(2021HB-08) （2021HB-08）
