生态环境中总氮含量测定方法的研究与探讨  

Research and discussion on the determination methods of totalnitrogen content in the ecological environment

作　　者：刘永华 LIU Yonghua(Linyi Hydrology Center,Linyi 276000,China)

机构地区：[1]临沂市水文中心,山东临沂276000

出　　处：《水利建设与管理》2024年第10期56-60,共5页Water Conservancy Construction and Management

摘　　要：本次实验采用气相分子吸收光谱法和紫外分光光度法两种方法分别对水生态环境中总氮含量进行测定,通过对比分析两种方法的标准曲线、方法检出限、精密度、准确度和加标样品等,了解两种方法测定水生态环境中总氮含量的优缺点。结果表明,两种方法在测定水生态环境中总氮含量时的标准曲线、方法检出限、精密度、准确度和加标回收率均能满足水生态环境检测要求,气相分子吸收光谱法相较紫外分光光度法有更高的在线自动化程度和安全系数,更加绿色环保,可以实现少批量、多批次样品的快速检测,很大程度上节省了人力和时间成本。In this experiment,two different methods—gas-phase molecular absorption spectroscopy and ultraviolet spectrophotometry—were used to determine the total nitrogen content in the aquatic ecological environment.A comparative analysis was conducted by examining the standard curves,detection limits,precision,accuracy,and spiked samples of both methods.The strengths and weaknesses of each method for determining total nitrogen content in the water environment were comprehensively compared.The results show that both methods meet the requirements for detecting total nitrogen in the water ecological environment in terms of standard curves,detection limits,precision,accuracy,and spike recovery rates.Compared to ultraviolet spectrophotometry,gas-phase molecular absorption spectroscopy offers a higher degree of online automation and safety,is more environmentally friendly,and enables rapid detection of small-batch,multi-batch samples,significantly saving labor and time costs.

关 键 词：环保 消除安全隐患 在线自动化 少批量、多批次 人力和时间成本 

分 类 号：TU-022[建筑科学—建筑理论]