@misc{oai:repo.qst.go.jp:00080467,
 author = {Zhang, Shuai and Yang, Guosheng and Zheng, Jian and Pan, Shaoming and Aono, Tatsuo and Zhang, Shuai and Yang, Guosheng and Zheng, Jian and Aono, Tatsuo},
 month = {Sep},
 note = {Plutonium in seawater is a well-known tracer in biogeochemical processes with its particle-reactive properties. Recent studies evidenced that another transuranic isotope, 237Np (t1/2=2.14×106 y) has a similar behavior of 137Cs, thus shows great potential to act as a tracer for water mass circulation for decadal and longer time scales. However, information on 237Np presented in seawater, especially in open ocean is very scarce, the distribution and inventory of 237Np in the ocean remains largely unknown due to its low concentration in seawater and great analytical challenge for its measurement. Most methods for analysis of 237Np need a large volume seawater, tedious chemical separations, and long counting times in the radiometric methods of alpha spectrometry, and the expensive AMS devices. In this study, we present a new method for simultaneous determination of 237Np and Pu isotopes in seawater by SF-ICP-MS. 242Pu was employed as a non-isotopes yield tracer for 237Np and Pu isotopes. A single column anion-exchange (AG MP-1M) chromatography was used for chemical separation of 237Np and Pu isotopes from seawater matrix. This method was applied to determine the seawater samples collected from the Pacific Ocean for the first time., 日本放射化学会第64回討論会(2020)},
 title = {Method development for simultaneous determination of 237Np and Pu isotopes in seawater by SF-ICP-MS with a single column chromatographic separation},
 year = {2020}
}