连续光源火焰原子吸收光谱法测量镁电解质中四元组分的含量  

Determination of Quaternary Components in Magnesium Electrolyte by Flame Atomic Absorption Spectrometry with Continuous Light Source

作　　者：张远琴 ZHANG Yuanqin(Panxi Institute of Vanadium and Titanium Inspection and Testing,Panzhihua,Sichuan Province,617000 China)

机构地区：[1]攀西钒钛检验检测院,四川攀枝花617000

出　　处：《科技创新导报》2022年第8期11-14,共4页Science and Technology Innovation Herald

摘　　要：本文采用连续光源火焰原子吸收光谱法,测定镁电解质中氯化钾、氯化钠钠、氯化镁和氯化钙四元组分含量。通过系列实验,探讨了火焰温度及分析谱线选择等仪器测量参数的选择;通过仪器自动优化功能,对火焰测量参数(燃气流量、助燃比、燃烧头高度)进行优化,并以氯化镧为干扰消除剂,消除钾、钠的电离干扰及NH和SiO对钠和镁的分子吸收光谱干扰。通过精密度和加标回收实验表明,各元素测量相对标准偏差小于1%,回收率在93%~103%。The contents of potassium chloride,sodium chloride,magnesium chloride and calcium chloride in magnesium electrolyte are determined by continuous light source flame atomic absorption spectrometry in this paper.The instrument measurement parameters such as flame temperature and analytical spectral line are discussed through a series of experiments,the flame measurement parameters(gas flow,combustion supporting ratio and combustion head height)are optimized through the automatic optimization function of the instrument,and Lanthanum chloride is used as interference eliminator to eliminate the ionization interference of potassium and sodium and the interference of NH and SiO on the molecular absorption spectrum of sodium and magnesium.The precision and recovery experiments show that the relative standard deviation of each element is less than 1%,and the recovery is 93%to 103%.

关 键 词：火焰原子吸收光谱法 电解质 四元组分 氯化镧 

分 类 号：TQ153.13[化学工程—电化学工业] O657.31[理学—分析化学]