The Behavior Of Suspension Particle For Slurry Nebulization Introduction In Inductively Coupled Plasma Optical Emission Spectrometry

Inorganic materials, especially the advanced ceramic materials, have wide interests in various fields of science and technology. However, the micro trace impurities will seriously affect its performance.Suspension directly nebulization in inductively coupled plasma atomic emission spectrometry with aqueous standards calibration is an ideal method for analysis of the ceramic material. The technique is simple to operate and markedly reduce analysis time. However, the accuracy and precision of the analysis results will be decreased because the refractory material is incompletely evaporated in the plasma. The evaporation behavior of slurry particles was estimated on the base of the model developed in this work. The modeling of the evaporation behavior of slurry particles has been developed in FORTRAN 90 language. The size of upper limit of the particles which can be evaporated completely in the plasma can be also obtained by using this model. The model predicts the maximum particle size that can be evaporated completely for SiC(5.4μm) and Al2O3 (6.8μm) and B4C(2.0μm), respectively. In this paper efforts were made to reduce particle size to meet the requirements of slurry nebulization ICP-OES. In addition, a simple and easy method for the grinding of alumina sintering block without contamination in our laboratory was present. Analytical results obtained by using slurry nebulization ICP-OES with aqueous standards calibration were evaluated in comparison with those obtained by high pressure digestion.