A STUDY OF NEUTRON-ACTIVATION TRACER SEDIMENT TECHNIQUE

In this study, iridium (Ir) was selected as a signal element, the chem ical adsorption tagging method was adopted to make the tracer sediment s, the neutron activation analysis method was used to determine the si gnal element content in sediments, and the sediment transport law was judged according to the movement characteristics of the signal element s. This method overcomes the shortcomings of the fluorescent sediment technique and radioactive tracer sediment technique. It is capable of simulating truly the movement characteristics of natural sediments. Th erefore, it is an advanced technique for observation of the sediment m ovement. The expectant effects were obtained in the experiment on the first domestic practical application of this method carried out in Tia njin Port.