微波消解-火焰原子吸收光谱法测定氧化铝中的氧化钠  

Determination of Sodium Oxide in Aluminum Oxide by Microwave Digestion-flame Atomic Absorption Spectrometry

作　　者：薛心禄 

机构地区：[1]青海大柴旦矿业有限公司,青海西宁810000

出　　处：《广东化工》2012年第10期43-43,30,共2页Guangdong Chemical Industry

摘　　要：氧化铝中氧化钠含量的测定,一般采用高温熔结,用水浸出钠盐后,用原子吸收火焰光度法测定,该方法的测定周期比较长,而且高温熔结时对铂金皿的损耗比较大。文章提出了试样用磷酸和硫酸混合溶液,在高压微波消解器中进行处理,将样品在较短的时间内消解,并在试液中加入一定量的氯化铯,消除钠的电离干扰,采用原子吸收光谱法直接测定,测试结果与标准样品推荐值比较,结果令人满意。The sodium oxide content in aluminum oxide is usually determined by atomic absorption spectrophotometry with high temperature melting and leaching, which is time consuming and damage platinum bowl. The paper proposed forward to determine with sample of mixed phosphoric acid and sulfuric acid solution to process in the high pressure microwave digestion device. The samples were digested in a relatively short time, and added a certain amount of cesium chloride in the test solution. Used for eliminate ionization interference of sodium to directly determine sodium oxide in aluminum oxide by Atomic Absorption Spectrophotometer. Under the comparison of test results and recommended values of standard samples, it was satisfactory.

关 键 词：微波消解 原子吸收光谱法 氧化铝 氧化钠 氯化铯 

分 类 号：O65[理学—分析化学]