碱熔融-电感耦合等离子体原子发射光谱法测定氧化铟锡烧结混合粉中5种杂质元素

Determination of 5 Elements in In_2O_3-SnO_2 Sintered Mix Powder by Inductively Coupled Plasma Atomic Emission Spectrometry with Alkali-Melt

采用氢氧化钠熔融样品,热水浸取后盐酸酸化,建立了碱熔融-电感耦合等离子体原子发射光谱(ICP-AES)法测定氧化铟锡烧结混合粉中Fe、Ca、Mg、Al和Si等元素的分析方法.试验结果表明:称取0.500 0 g试样,加入0.80 g氢氧化钠,在灰化炉中熔融120 min,可将样品完全溶解.基体铟和锡的干扰采用基体匹配法消除,被测元素之间没有光谱干扰.钠盐对硅的测定有一定影响,可在标准溶液中加入一定量氢氧化钠予以消除.对方法进行精密度和加标回收试验,测得结果的相对标准偏差均小于5%,方法加标回收率在90%~105%之间.

method for the determination of Fe,Ca,Mg,Al?Si in In2O3-SnO2 sintered mix powder with alkali-melt,using hydrochloric acid acidification after immersed in hot water,by inductively coupled plasma atomic emission spectrometry(ICP-AES)is developed.The results showed that after the addition 0.80 g of sodium hydroxide,0.500 0 g of the sample and fused for 120 min in an ashing furnace,the sample can be completely dissolved.The effects of matrix indium and tin can be eliminated by the matrix matching method,and no spectral interferences between the measured elements took place.Sodium salt has a certain influence on the determination of silicon,which can be eliminated by the addition of a certain amount of sodium hydroxide in standard solutions.Standard spiking test and precision were carried out.The relative standard deviations(RSD)were less than 5%and the recoveries were 90%~105%.