METHODOLOGICAL STUDIES OF PIXE ON BIOLOGICAL AND ENVIRONMENTAL SCIENCE

The Van de Graaff Facility at IHEP is mainly used for PIXE research wo rk especially on biologicial and environmental science. The sensitivit ies and the number of analyzed trace elements were improved greatly us ing special absorbers for bone and whole blood samples. Quite good res ults were obtained for different biomedical research work. Several met hods for preparing samples of dispersed single aerosol particles used in Scanning Proton Microprobe (SPM) analysis were tested. The groups o f different single aerosol particles from steel plant area were analyz ed by means of SPM. The distributions of elemental contents in the gro up of single particles are mapped with three dimensional contour and t he isometric. A new approach to study the group of different single ae rosol particles for air pollution is developed in the present work.