Gamma-ray spectrometry assessed radioactivity in imported teas, suggesting low health risks to consumers.
In this investigation, the specific activity concentrations of the radioactive nuclides Uranium- 238, Thorium- 232, and Potassium- 40 were measured in 15 commercial tea samples available in Iraqi markets using a gamma-ray spectrometry system. The 238U, 232Th, and 40k average specific activities from the samples, respectively, were 9.48±1.36, 2.91±0.45, and 597.78±14.90. The results of the health risk parameters: Radium equivalent, Internal hazard index, Annual Effective Dose, and Excess life time cancer risk, respectively, were found to be lower than the acceptable UNSCEAR permissible values. Therefore, the investigated tea samples have no health risks when used by Iraqi customers.
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Ruaa R. Muneam (2025) studied this question.
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