火焰原子吸收光谱法测定胺液中的钠含量  

Determination of Sodium Mass Concentration in Amine Solution by Flame Atomic Absorption Spectroscopy

作　　者：杨慧玉 王刚 杨卫亚 王家兴 李明一 张雁玲 杨春雁 孙亚光[1] YANG Huiyu;WANG Gang;YANG Weiya;WANG Jiaxing;LI Mingyi;ZHANG Yanling;YANG Chunyan;SUN Yaguang(College of Science,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China;National Paraffin Quality Inspection and Testing Center,Sinopec(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian Liaoning 116045,China)

机构地区：[1]沈阳化工大学理学院,辽宁沈阳110142 [2]中石化(大连)石油化工研究院有限公司国家石蜡质量检验检测中心,辽宁大连116045

出　　处：《当代化工》2025年第2期501-504,共4页Contemporary Chemical Industry

基　　金：中国石化重点科技项目(项目编号:324110)。

摘　　要：通过优化实验条件,消除电离作用的干扰,提出了火焰原子吸收光谱法测定胺液中钠的方法。优化条件如下:第一灵敏线钠波长589.0 nm、狭缝宽度0.2 nm、电流13 mA、燃烧头高度6.0 mm、燃烧头角度0^(°)、燃烧头类型100 mm、火焰类型乙炔-空气(燃气、助燃气的流量分别为90、610 L·h^(-1));消电离剂氯化锶质量浓度为0.10~0.50 g·L^(-1),钠测定线性范围0~1.50 mg·L^(-1)。此方法标准线性相关性良好,回收率为96.20%~99.95%,钠检出限为0.0021 mg·L^(-1),相对标准偏差为0.70%,共存元素干扰影响较小。A flame atomic absorption spectrometry (FAAS) method for the determination of sodium in amine solution was proposed by optimizing the experimental conditions so as to eliminate the interference of ionization.The optimization conditions were determined as follows:the wavelength as the first sensitive line of sodium was 589.0 nm,the width of slit was 0.2 nm,the intensity of the lamp was 13 mA,the combustion head height was 6.0 mm,its angle was 0°and type was 100 mm,and the flame type was acetylene-air (the flow rates of gas and auxiliary gas were 90 L·h^(-1) and 610 L·h^(-1)respectively).The mass concentration of strontium chloride as the elimination ionizer was 0.10~0.50 g·L^(-1),and the linear range of sodium determination was 0~1.50 mg·L^(-1).The method has good linear correlation with the recovery rate of 96.20%~99.95%.The detection limit of sodium is 0.002 1 mg·L^(-1),the relative standard deviation was 0.70%,and the interference effect of coexisting elements is small.

关 键 词：胺液 钠 氯化锶 火焰原子吸收光谱法 第一灵敏线 

分 类 号：TQ426.94[化学工程]