LANT

Identified new patterns of ⁹⁰Sr conduct in groundwater that have passed way migration under the "Ukryttya" object. Shown that in alkaline groundwater environment with pH 8.5 – 10 volume activity of ⁹⁰Sr is reduced to several Bq/l by creating weakly soluble compounds with СО₃^2-, which precipitate. When pH above 10 - 11, increases ⁹⁰Sr migration capacity and the values of ⁹⁰Sr volume activity in groundwater samples reaches 150 – 2100 Bq/l.

Keywords: groundwater, industrial site of ChNPP, migration, ⁹⁰Sr activity, pH, carbonate-ion.

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