Jixin Qiao
Professor
Department of Environmental and Resource Engineering
Frederiksborgvej 399
Building 204 Room S06
4000 Roskilde
Danmark
Jixin Qiao's research is centered on development of radiochemical methods and automation techniques for determining difficult-to-measure radionuclides, and the application of anthropogenic radiotracers in environmental and oceanic studies. Her major contribution to science includes: 1) Development of automated radioanalytical apparatus based on advanced flow techniques; She is among a few scientists who independently explore flow techniques, design and assembly of flow-based setups for automated radioassay. 2) Method development for determining low-level radionuclides in various environmental and waste samples based on advanced mass spectrometric techniques; She has developed a number of rapid analytical methods for the determination of anthropogenic radionuclides which are generally complicated to determine in environmental, biological and radioactive wastes samples. 3) Pioneering oceanic tracer application using anthropogenic uranium isotopes (233U and 236U) for tracing ocean circulation and pollutant dynamics; She developed a sensitive method and quality control system for ultra-low levels of 233U and 236U measurement in environmental samples. She carried out the first 233U-236U oceanic tracer study in the Baltic Sea and Arctic Ocean, discovered unknown radioactive releases in the Baltic Sea using multiple radiotracer (129I-233U-236U) approach. 4) Application of natural and anthropogenic radioisotopes for environmental tracer studies including soil erosion, geological dating, pollutant transport, carbon cycling and climate change. .