{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["11(1)"],"submitter":["Shah RV"],"pubmed_abstract":["Groundwater isotopic screening has gained increased attention for determining the α activity ratio of <sup>234</sup>U/<sup>238</sup>U. This requires efficient uranium preconcentration from aquifer samples and precise measurement of the minor abundant isotope ratio of <sup>234</sup>U/<sup>238</sup>U (approximately 55 ppm). Using polydopamine-coated Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (PDA@Fe<sub>3</sub>O<sub>4</sub>-NPs) to extract uranium from aquifer samples reduces analysis time by over 80% compared to conventional preconcentration methods. Thermal Ionization mass spectrometry (TIMS) with carefully selected detector combinations and a novel methodology was employed to measure the <sup>234</sup>U/<sup>238</sup>U isotope ratio. The methodology involves sequentially collectin"],"journal":["ACS omega"],"pagination":["361-370"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12809863"],"repository":["biostudies-literature"],"pubmed_title":["Nanoparticle-Assisted Uranium Extraction and Precise Isotopic Fingerprinting in Groundwater by TIMS."],"pmcid":["PMC12809863"],"pubmed_authors":["Jaison PG","Bhushan KS","Goswami P","Sanyal K","Shah RV"],"additional_accession":[]},"is_claimable":false,"name":"Nanoparticle-Assisted Uranium Extraction and Precise Isotopic Fingerprinting in Groundwater by TIMS.","description":"Groundwater isotopic screening has gained increased attention for determining the α activity ratio of <sup>234</sup>U/<sup>238</sup>U. This requires efficient uranium preconcentration from aquifer samples and precise measurement of the minor abundant isotope ratio of <sup>234</sup>U/<sup>238</sup>U (approximately 55 ppm). Using polydopamine-coated Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (PDA@Fe<sub>3</sub>O<sub>4</sub>-NPs) to extract uranium from aquifer samples reduces analysis time by over 80% compared to conventional preconcentration methods. Thermal Ionization mass spectrometry (TIMS) with carefully selected detector combinations and a novel methodology was employed to measure the <sup>234</sup>U/<sup>238</sup>U isotope ratio. The methodology involves sequentially collectin","dates":{"release":"2026-01-01T00:00:00Z","publication":"2026 Jan","modification":"2026-06-06T13:52:07.018Z","creation":"2026-05-31T03:09:51.625Z"},"accession":"S-EPMC12809863","cross_references":{"pubmed":["41552551"],"doi":["10.1021/acsomega.5c02946"]}}