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Neutron moderation effects in phc contaiminated soil samples

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Abstract

Prompt gamma ray analysis of soil samples contaminated with petroleum hydrocarbons(PHC) like benzene was carried out using 14 MeV neutron beams. Intensities of silicon, carbon, oxygen, and hydrogen gamma rays were measured for soil samples containing 2.20–10.4 wt% benzene. With increasing benzene concentration, the intensity of the C gamma rays increased while those of Si, H, and O gamma rays decreased. The reduction in Si, H, and O gamma ray intensities may be due to increasing neutron moderation effect in benzene-contaminated soil samples. The experimental intensities of gamma rays are in good agreement with the calculated intensities.The neutron moderation effects in benzene contaminated soil samples are about 26% weaker than those reported for soil samples containing moisture. From the slopes of silicon gamma ray intensity as a function of benzene concentration as well as moisture concentration, a simple scheme has been suggested to correct for the loss in carbon counts caused by neutron moderation from PHC and moisture in the soil samples.

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Acknowledgements

This study has been funded through the National Science, Technology and Innovation Plan (NSTIP), project # 12-ENV2367-04. The support provided by the Department of Physics, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, is also acknowledged.

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Authors and Affiliations

  1. Department of Physics, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

    A. A. Naqvi, F. Z. Khiari, Fatai A. Liadi,  Khateeb-ur-Rehman & M. Raashid

  2. Department of Chemistry King, Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia

    A. A. Isab

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  1. A. A. Naqvi
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  2. F. Z. Khiari
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  3. Fatai A. Liadi
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  4. Khateeb-ur-Rehman
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  5. M. Raashid
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  6. A. A. Isab
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Correspondence to A. A. Naqvi.

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Naqvi, A.A., Khiari, F.Z., Liadi, F.A. et al. Neutron moderation effects in phc contaiminated soil samples. J Radioanal Nucl Chem 315, 475–480 (2018). https://doi.org/10.1007/s10967-018-5702-y

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  • DOI: https://doi.org/10.1007/s10967-018-5702-y

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