The enriched stable isotope tracer technique combined with neutron activation analysis and differential centrifugation was utilized to investigate the subcellular distribution of rare earth elements sm and yb in rat liver
2.
The leaching and transferring of 95zr in different soils and its actions in several aquatic and terraneous ecosystems were studied by using the isotope tracer techniques . this would provide some basic data for illustrating the behavior of 95zr in different agricultural ecosystems and serve as science according for establishing some safety standard and managing pollution . at one time , environmental pollution arising by poisonous pollutes has been global hotspot problem