@article{oai:repo.qst.go.jp:00083009, author = {Zhang, Shuai and Yang, Guosheng and Zheng, Jian and Tatsuo, Aono and Pan, Shaoming and Zhang, Shuai and Yang, Guosheng and Zheng, Jian and Tatsuo, Aono}, journal = {Journal of Radioanalytical and Nuclear Chemistry}, month = {Jun}, note = {A rapid method was developed to analyze 237Np and Pu isotopes in steel and concrete samples using HCl−HNO3−NH4HF2 digestion, CaF2/LaF3 co-precipitation, AG MP-1M resin column separation and SF-ICP-MS measurement. Compared to acid digestion using HCl−HNO3−HF, the whole procedure not only avoids the use of toxic HF, but can be completed within 1 day. The decontamination factor of U was estimated to be 1.1  106. The limits of detection of 237Np, 239Pu, and 240Pu were 0.25, 0.16, and 0.14 fg g-1, respectively, allowing method users to sufficiently detect low level Pu and Np in steel and concrete samples.}, pages = {1083--1090}, title = {A simple acid digestion using HCl–HNO3−NH4HF2 for rapid SF-ICP-MS determination of 237Np and Pu isotopes in steel and concrete samples}, volume = {329}, year = {2021} }