The ESR method to detect the irradiated fish and beef bones. | [Journal of Chemical Society of Pakistan • 2008]

Author(s):

1. Shaheen Atta: Nuclear Institute for Food and Agriculture (NIFA), Tarnab, Peshawar, Pakistan

2. Taufiq Ahmad: Nuclear Institute for Food and Agriculture (NIFA), Tarnab, Peshawar, Pakistan

3. Aurang-Zeb: Nuclear Institute for Food and Agriculture (NIFA), Tarnab, Peshawar, Pakistan

4. Saeed A. Nagra: Institute of Chemistry, University of the Punjab, Lahore, Pakistan

Abstract:

Electron spin resonance (ESR) spectroscopy was employed for identification and quantification of the more stable free radicals generated by irradiation in bones of fish and beef The samples were irradiated 1- 5 kGy with gamma rays using Co-60 source. ESR spectroscopy was employed to detect irradiation in samples offish and beef bones. Results revealed that the irradiated samples showed strong asymmetricsignals with g1 2.002 ± 0.001 and g2 1.998 ± 0.001 respectively, which was a clear indication of irradiation. The control samples were not irradiated and showed typical low intensity symmetricsignals at g-value of 2.005 ± 0.001 revealing the absence of radiation treatment. It was also observed that intensities of signals due to hydroxyapatite radicals for 5 kGy were normally higher than 1 kGy radiation dose showing the dose dependency.

Page(s): 708-711

DOI: DOI not available

Published: Journal: Journal of Chemical Society of Pakistan, Volume: 30, Issue: 5, Year: 2008

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