THE FUNDAMENTAL-STUDY OF HE-MIP-AES ANALYSIS AS PARTICLE-BY-PARTICLE MEASUREMENT WITH SIO2 MONODISPERSED MICROSPHERE

Five types of silica microspheres of uniform size and composition were studied as refractory reference samples for quantification of He-MIP- AES particle analyzer. The cube root of Si emission pulse intensity of individual particles was plotted against their geometrical diameters. A quantitative relationship with the spectrum intensity was found at the highest pulse population of the spectral pulse distribution. Howev er, the distribution of pulse intensity from an uniform fraction was w ider than expected and the linear size range was also small between 3. 0-6.0 mu m. On the other hand, each Si emission pulse synchronized wit hin 390 mu sec with Ti emission pulse in two types of coated silica mi crospheres and the individual relative emission intensities (Ti vs Si) was almost constant.