Argon (Ar) Isotopes

Enriched stable Argon (Ag) isotopes:
Nominal mass	Accurate mass	% Natural abundance	Chemical form	Enrichment available %

³⁶ Ar	35.96754552 (29)	0.337 (30)	gas	99+

³⁸Ar	37.9627325 (9)	0.063 (5)	gas	ENQUIRE

⁴⁰Ar	39.9623837 (14)	99.600 (30)	gas	99.9+

Argon isotopes are used as precursors in the production of radioisotopes. Argon isotopes Ar-40 and Ar-38 are used in the production of radioactive K-38 which can be used as a blood flow tracer. Ar-40 is used in the production of radioactive Ar-41 which is used to trace gas flows.

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