氢化物发生-原子荧光法用于海水中痕量铅定量分析的研究  

Study on the Quantitative Analysis of Trace Lead in Seawater Using Hydride Generation Atomic Fluorescence Spectrometry

作　　者：程君琪 张健 Cheng Junqi;Zhang Jian(Jiangsu Xuanyi Environment Technology Co.,Ltd.,Wuxi 214000,China)

机构地区：[1]江苏宣溢环境科技有限公司,江苏无锡214000

出　　处：《山东化工》2024年第7期156-159,167,共5页Shandong Chemical Industry

摘　　要：建立了氢化物发生-原子荧光法测定海水中痕量铅的方法。海水只需经简单过滤处理后用氢化物发生-原子荧光法直接进样分析,以草酸作为掩蔽剂、甲酸作为增敏剂、铁氰化钾作为氧化剂,采用原子荧光仪进行分析。海水中铅在1.0~50μg/L质量浓度范围内具有较好的线性关系,方法的回收率为95.0%~107.0%,相对标准偏差为2.1%,本方法检出限为0.1μg/L。方法无需手动进行复杂的前处理过程,且准确性好,可用于大批量海水中铅的定量分析。This experiment established a method for the determination of trace lead in water and seawater using hydride generation atomic fluorescence spectrometry(HG-AFS).Seawater only needs to be subjected to simple filtration treatment and directly analyzed by hydride generation atomic fluorescence spectrometry.Oxalic acid is used as a masking agent,formic acid is used as a sensitizer,and potassium ferrocyanide is used as an oxidant.The analysis is carried out using an atomic fluorescence analyzer.Lead in seawater has a good linear relationship within the concentration range of 1.0 to 50μg/L.The recovery rate of the method is 95.0%to 107.0%,and the relative standard deviation is 2.1%.The detection limit of this method is 0.1μg/L.The method does not require manual and complex pre-treatment processes,and has good accuracy,which can be used for quantitative analysis of lead in large quantities of seawater.

关 键 词：原子荧光 海水 铅 定量分析 

分 类 号：O657.31[理学—分析化学]