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New ceramic materials in the information, aerospace, life sciences and other fields of modern science and technology have played a very important role, but its chemical composition and impurities greatly affect the material properties (mechanical, thermal stability electromagnetic, optical properties etc.), so the determination of new ceramic materials trace impurity element contents become a serious problem today. Routine analysis sample preparation a solution sample, but due to their physical and chemical properties, the new ceramic material is difficult to prepare a solution. Suspension of a combination of solid and liquid injection method a significant advantage, and the total mass of the sample weighed high, is a relatively mature technology, and has been widely used as a routine analytical methods of organic and inorganic complex matrix of micro, marks Analysis and Determination of the amount of metal elements. Graphite furnace atomic absorption spectrometry is considered the direct analysis of solid samples most attractive technology, mainly because of its solid material can be directly introduced into the atomizer, the sample in the atomizer to stay longer, in any shape or volatile particle are atomized, in addition, it has a low detection limit, high selectivity, high sensitivity advantages summary, graphite furnace atomic absorption determination to become an easily acceptable methods and determination of trace elements in solid materials a kind of conventional methods. Needless to prepare the suspension a solution of the sample, so compared to the injection solution, particles in the atomization process will produce non-specific absorption; graphite furnace temperature program to be difficult to avoid both the analyte and the atomized matrix, therefore, effective background correction is necessary. In this paper, self-priming buckle Zeeman background correction background and measured in two ways. High purity alumina, silicon carbide ceramic material is insoluble. In this paper, graphite furnace atomic absorption spectrometry in which trace element content. Choose between two different experimental injection method, namely high pressure digestion and suspensions, including alumina and silicon carbide suspensions were selected ammonium polyacrylate (NH4PAA), polyetherimide (PEI) as a dispersing agent, vortex mixed to ensure the dispersibility of the suspension, stability, extremely uniform, and the use of persistent Zr matrix modifier was measured and found that it can effectively reduce the deposition of residues, greatly improve the life of the graphite tube. In addition, the article also ashing temperature, atomization temperature and hollow cathode lamps lamp current, etc. Graphite Furnace Atomic Absorption working conditions were optimized, and ultimately determine the optimum conditions. Aqueous solution of the test sample using standard calibration accuracy of the method using a standard sample of alumina AKP-30, SiC BAM-S003 Injection mode in both the analysis measurement result, and with the reported results were compared with other measurement methods. The linear calibration curve was measured correlation greater than 0.999, the detection limit is low, the relative standard deviation is less than 6.6%. Studies show that the method is simple, accurate, suitable for ceramic materials rapid determination of trace elements.
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