Determination of Calcium Isotopes Using Inductive Coupled Plasma-Tandem Mass Spectrometry with Ozone-Induced Oxidation.

ABSTRACT: In this study, we propose a new method for determination of calcium (Ca) isotopes using inductive coupled plasma-tandem mass spectrometry (ICP-MS/MS). The most abundant isotope of Ca, ⁴⁰Ca, has a spectrum identical with that of argon (Ar), which is often used as the carrier gas in ICP-MS analysis. The detection capability for ⁴⁰Ca is thus significantly reduced in the presence of ⁴⁰Ar. To avoid interference from ⁴⁰Ar during the ⁴⁰Ca measurements, ozone (O₃) was used as the reaction gas in the ICP-MS/MS analysis. The reaction of Ca⁺ with O₃ in the collision cell preferentially produced CaO₃⁺. In contrast, the reaction between Ar⁺ and O₃ produced ArO⁺,

SUBMITTER: Asakawa D 

PROVIDER: S-EPMC11483431 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature