总磷在线分析仪的准确性及影响因素分析——以泸州市水质自动监测站为例  

Analysis of Accuracy and Influencing Factors of Total Phosphorus Online Analyzer:Taking the Automatic Water Quality Monitoring Station in Luzhou City as an Example

作　　者：薛京洲 付卫卫 赵倩 何仁江 XUE Jingzhou;FU Weiwei;ZHAO Qian;HE Renjiang(Luzhou Ecological and Environmental Monitoring Central Station of Sichuan Province,Luzhou 646000,Sichuan,China;Environmental Health Effects and Risk Assessment Key Laboratory of Luzhou,Luzhou 646000,Sichuan,China;Shanghai KeZe Intelligence Environment Technology Co.,Ltd.,Shanghai 200040,China)

机构地区：[1]四川省泸州生态环境监测中心站,四川泸州646000 [2]环境健康效应及风险评估泸州市重点实验室,四川泸州646000 [3]上海科泽智慧环境科技有限公司,上海200040

出　　处：《科技和产业》2024年第11期171-174,共4页Science Technology and Industry

基　　金：泸州市人民政府-西南医科大学科技战略合作项目(2023LZXNYDJ050);四川医事卫生法治研究中心科研项目(YF20-Y10)。

摘　　要：为分析总磷在线分析仪的准确性及影响因素,回顾性分析2023年泸州市省级水质自动监测站中3款不同型号的总磷在线分析仪全年的质控监测数据。结果表明:采用钼酸铵分光光度法的总磷在线分析仪具有较高的准确性、稳定性和线性,但受仪器试剂浓度和仪器校准曲线的影响,会阶段性出现测量偏差。实际水样的加标回收和实验室比对结果表明,浊度会影响分析结果的准确性,其中具有浊度补偿功能的仪器受浊度影响较小。In order to analyze the accuracy and influencing factors of total phosphorus online analyzers,the quality control monitoring data of three different models of total phosphorus online analyzers in the provincial water quality automatic monitoring station of Luzhou City in 2023 is retrospectively analyzed.The results show that the total phosphorus online analyzer using ammonium molybdate spectrophotometry has high accuracy,stability,and linearity,but measurement deviations may occur periodically due to the influence of instrument reagent concentration and instrument calibration curve.The results of actual water sample recovery and laboratory comparison show that turbidity can affect the accuracy of analysis results,and instruments with turbidity compensation function are less affected by turbidity.

关 键 词：泸州市 地表水 总磷 自动监测 

分 类 号：X853[环境科学与工程—环境工程]