Determination of Femtogram-Level Plutonium Isotopes in Environmental and Forensic Samples with High-Level Uranium Using Chemical Separation and ICP-MS/MS Measurement.

ICP-MS is becoming a competitive technique for measurement of plutonium isotopes. Besides the abundance sensitivity (tailing of ²³⁸U to <i>m</i>/<i>z</i> = 239 and 240), isobaric and polyatomic ions interferences (e.g., ²³⁸U¹H⁺) are the most critical chall... View More