水质监测“国家队”：115套仪器系统入选总站适用名录

Core Viewpoint - The article highlights the importance of multi-parameter water quality monitoring systems, emphasizing their role in detecting water pollution and supporting environmental management through real-time data collection and analysis [1][5]. Summary by Sections Water Quality Monitoring Parameters - The five core parameters for assessing water quality include pH, dissolved oxygen (DO), turbidity, electrical conductivity, and temperature, which are essential for monitoring various water bodies such as surface water, groundwater, industrial wastewater, and drinking water sources [2][3]. - pH is a critical indicator of water acidity or alkalinity, with normal surface water pH ranging from 6.5 to 8.5. Deviations can affect aquatic life and pollutant behavior [2]. - Dissolved oxygen (DO) levels indicate the self-purification capacity of water; levels below 5 mg/L can lead to aquatic life suffocation and pollution issues [2]. - Turbidity measures the clarity of water, with high turbidity affecting photosynthesis in aquatic plants and increasing treatment costs for drinking water [3]. - Electrical conductivity reflects the concentration of dissolved ions in water, with higher values indicating potential pollution from soluble salts and heavy metals [3]. - Temperature influences the solubility of oxygen and the metabolic rates of aquatic organisms, serving as a calibration reference for monitoring data [3]. Additional Monitoring Parameters - Multi-parameter analyzers also include supplementary indicators such as Chemical Oxygen Demand (COD), ammonia nitrogen (NH₃-N), total phosphorus (TP), and total nitrogen (TN), which are crucial for assessing organic pollution and nutrient enrichment risks [4][5]. - COD is used to evaluate the total amount of organic and reducible inorganic substances in water, while ammonia nitrogen and total phosphorus are key factors in assessing eutrophication risks [4]. - Total nitrogen, which includes various nitrogen forms, is essential for understanding potential eutrophication in water bodies [4]. Instrumentation and Compliance - A total of 95 manufacturers have produced 115 models of water quality multi-parameter automatic monitoring systems that have passed the suitability testing as per the list published by the China National Environmental Monitoring Center [1][5]. - The instruments comply with national monitoring standards, ensuring their reliability and effectiveness in various environmental monitoring scenarios [6][7].