水生态环境中硫化物不同检测方法比对研究  

Comparative Study of Different Detection Methods for Sulfides in Aquatic Ecosystems

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：《水资源开发与管理》2024年第10期64-70,45,共8页Water Resources Development and Management

摘　　要：本文采用连续流动分析-分光光度法、气相分子吸收光谱法和亚甲基蓝分光光度法测定水生态环境中硫化物的含量,对硫化物不同检测方法的适用范围、样品固定及保存方法、样品的前处理以及方法的检出限、准确度、精密度和加标回收率进行了分析研究。结果表明,连续流动分析-分光光度法和气相分子吸收光谱法的分析结果基本无差异,该两种方法与亚甲基蓝分光光度法相比,具有操作简便、仪器自动化程度高、快速高效、生态环保等优势,可以解决在日常硫化物检测工作中遇到的样品多、时间紧、任务急的难题。This paper compares the determination of sulfide content in aquatic ecosystems using three methods:Continuous Flow Analysis-Spectrophotometry,Gas-Phase Molecular Absorption Spectroscopy,and Methylene Blue Spectrophotometry.The research analyzes and compares the applicability of these different detection methods,including sample fixation and preservation methods,sample pretreatment,as well as the detection limits,accuracy,precision,and spike recovery rates of each method.The results indicate that the analysis results of Continuous Flow Analysis-Spectrophotometry and Gas-Phase Molecular Absorption Spectroscopy are essentially identical.Compared to the Methylene Blue Spectrophotometry method,the first two methods offer advantages such as ease of operation,high automation,speed,efficiency,and eco-friendliness.These advantages make them well-suited to address challenges in routine sulfide detection,such as large sample volumes,tight schedules,and urgent tasks.

关 键 词：连续流动分析-分光光度法 气相分子吸收光谱法 亚甲基蓝分光光度法 生态环保 快速高效 

分 类 号：TV213.4[水利工程—水文学及水资源]