Rapid method for accurate determination of actinides (U, Th, Pu and Am) in water samples for emergency response
To rapidly assess the contamination of actinides in emergency water, a method was developed to simultaneously analyze U, Th, Pu and Am. The method consists of two steps: extraction chromatographic separation using UTEVA and DGA resins and isotopic determination of actinides by inductively coupled plasma mass spectrometry (ICPMS). The whole analytical procedure takes only 8 h and high chemical recoveries of actinides were obtained. The cross spectral interferences between actinides in ICPMS measurement were sufficiently removed. The accuracy was validated by analyzing IAEA-443 seawater sample. The low limits of detection of actinides allow this method to distinguish low level contamination.
KeywordsICPMS Actinides Nuclear emergency response Simultaneous determination Water sample
This work was partially supported by the Science Challenge Project, China (JCKY2016212A504) and the National Natural Science Foundation of China (Grant No. 21607139).
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