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The aspects of the PIXE technique in the Van de Graaff Laboratory of Fudan University are reported. The analytical precision is within 5% when handling with care and within 10% in routine analysis. Some recent applications of PIXE are presented, including the pathogeny analysis of Kashin-Beck’s disease and cancer, hair analysis of pregnant women and an unknown primate, and PIXE analysis in DNA study.

By using a symmetrical driving method of electrostatic deflecting field, a new all-transistorized on-demand beam pulsing system for Particle-Induced x-ray Emission (PIXE) analysis has been made. The measured rise time of the electrostatic field is less than 35ns; the pile-up continuum in PIXE spectrum is greatly suppressed, and the counting rate reaches as high as 20,000 counts per second.

Thousands of atmospheric aerosol samples have been analyzed by PIXE at accelerator lab of Fudan university since 1980. These samples were sampled in Beijing, Shanghai, Tianjin, Taiyuan, Shanyang, Lhasa, on the Mt. Jolmo Lungma and at the Great Wall Station of China in the Antarctica, etc., by samplers of Model DK-60 and Wuan-75, cascade impactor and streaker. In this paper, the 12 main elemental concentrations, e.g., AI, Si, S, Cl, K, Ca, Ti, Fe, Cu, Zn, Pb and Br of the atmospheric aerosol in the cities and area mentioned above are listed and the variations of some elemental concentrations with aerosol particle size and with time are shown. The results are discussed.