Radioactivity levels in soil of salt field area, Kelambakkam, Tamilnadu, India

MISCELLANEOUS

Radioactivity levels in soil of salt field area, Kelambakkam, Tamilnadu, India

R. RAVISANKAR ，

A. RAJALAKSHMI，

P. ESWARAN，

V GAJENDIRAN.，

V. MEENAKSHISUNDRAM

Nuclear Science and Techniques

Vol.18, No.6

pp.372-375

Published in print 20 Dec 2007

DOI：10.1016/S1001-8042(08)60011-1

CLC：P619.21+1,X125

43700

Soil samples in and around salt field area have been analyzed for natural radioactivity concentration using gamma ray spectrometer. The activity concentration for ²³²Th, ²³⁸U and ⁴⁰K are ranged from 27.88 to 45.27 Bq/kg, from BDL to 13.30 Bq/kg, and from 135.54 to 381.28 Bq/kg, respectively. The measured activity concentrations for these radionuclides were compared with world average activity of soil. The average activity concentration of ²³²Th in the present study is 1.19 times higher than world median value while the activity of ²³⁸U and ⁴⁰K is found to be lower. The absorbed dose rates due to these radionuclides were calculated. The average absorbed gamma dose rate due to the presence of ²³²Th, ²³⁸U and ⁴⁰K in soil samples is 36.99 nGy·h^-1. These results indicate no radiological anomaly. The data presented in this study will serve as a base line survey for primordial radionuclides concentration in the study area.

Natural radioactivitySoil samplesSalt fieldGamma-ray spectrometer

References

[1]

United National Scientific Committee on the Effects of Atomic Radiation (UNSCEAR).

Sources and risks of ionizing radiation. Report to the General Assembly with annexes

, New York, United Nations, 2000.

Baidu Scholar

Google Scholar

[2]

Ravisankar R, Dheenathayalu M, Ramasamy V, et al. Radiation Protection and Environment, 2003, 26: 426.

[3]

Ravisankar R, Rajalakshmi A, Manikandan E. Acta Cieicia Indica, 2006, XXXII.3: 341.

[4]

Ravisankar R, Dheenathayalu M, Manikandan E, et al. Radiation Protection and Environment, 2005, 28: 419

[5]

Ravisankar R, Rajalakshmi A, Manikandan E, et al

DAE-BRNS Symposium on Nuclear Physics, The Maharaja Sayarirao University, University of Baroda, Vadodara, India, December 11-15, 2006: 672-673.

[6]

Carreria M C V, Sequeria A. Proceedings of XV Regional Congress of IRPA, Visby, Coltand, Sweden, 10-14 September, 1989.

[7]

United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR).

Sources and risks of ionising radiation. Report to the General Assembly with annexes

. New York: United Nations, 1988.

Baidu Scholar

Google Scholar