Activity concentration and annual effective ingestion dose assessment due to natural radionuclides present in cereal samples consumed by inhabitants of India
by Raj Kumari; Krishan Kant; Maneesha Garg; Rashi Gupta; R.G. Sonkawade; S.K. Chakarvarti
International Journal of Low Radiation (IJLR), Vol. 10, No. 2, 2015

Abstract: In the present study, activity concentration and annual effective ingestion dose assessment was carried out in cereal samples using gamma spectrometry. In the studied samples the activity of ²²⁶Ra, ²³⁸U, ²³²Th, and ⁴⁰K varied from 10.25±0.94 Bq/kg to 29.13±0.69 Bq/kg, 7.04±0.13 Bq/kg to 20.08±1.32 Bq/kg, 22.20±2.46 Bq/kg to 58.21±1.15 Bq/kg and 1158.4±26.05Bq/kg to 1962.2±18.17 Bq/kg with an average value of 20.06±4.82 Bq/kg, 13.08±1.31 Bq/kg, 41.53±3.77 Bq/kg, and 1639±75.55 Bq/kg respectively. The average value of annual effective ingestion dose from ingested food was 0.62±0.08 mSv/y, 0.07±0.006 mSv/y, 1.20±0.11 mSv/y, and 1.28±0.06 mSv/y from ²²⁶Ra, ²³⁸U, ²³²Th, and ⁴⁰K, respectively. The average value of total ingestion dose and cancer risk was found to be 3.18±0.14 mSv/y and (79.5±3.55) × 10⁻⁴ respectively.

Online publication date: Thu, 28-Jan-2016

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