Identification of the Origin of Radiocesium Released into the Environment in Areas Remote from Nuclear Accident and Military Test Sites Using The 135cs/137cs Isotopic Signature

Atomic spectrometry update – a review of advances in environmental analysis

“…An improved ICP-MS/MS method for measuring 135 Cs/ 137 Cs ratios in samples with low radiocaesium content combined 143 the authors' previously reported extraction and purication procedure with introduction of a novel gas mixture to the collisionreaction cell. The N 2 O (0.55 mL min −1 ) + He (1 mL min −1 ) + NH 3 /He (10 + 90 m/m, 4.79 mL min −1 ) gas mixture proved effective for removal of interference from residual Ba, Sb and Sn.…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…The 135 Cs/ 137 Cs ratio varies according to the ux and exposure time in the reactors with nuclear power station discharge having ratios of <0.52 and weapons tests >2.6. Magre et al 177 conducted an ICP-CC-MS study of Cs isotopes using N 2 O, He and NH 3 in the collision cell to minimise interference on 135 Cs and 137 Cs. Gas conditions were adjusted to negate interference while maximising Cs signal intensity.…”