Fallen dust samples from ten Northern Arabian Gulf locations were analyzed for natural radionuclides and ¹³⁷Cs using ultra-low background gamma spectrometry. A dust trap of 20 cm diameter collected the samples from ten sites in Kuwait, enabling the determination of radionuclide concentrations. Direct measurement of ²³⁴Th estimated ²³⁸ U, while the ²³⁵U concentration was calculated using the sum peak of ²²⁶Ra and ²³⁵U of 186 keV gamma line. The calculation of the uranium activity ratio showed that the sample contained natural levels of uranium isotopes. The average concentration of various radionuclides demonstrated significant variation. The median concentrations of⁷Be, ¹³⁷Cs, ²¹⁰Pb, ⁴⁰K, ²²⁴ Ra, ²²⁶Ra, ²²⁸Ra and ²³⁴Th were 1113 ± 148, 11.7 ± 0.6, 434 ± 27, 357 ± 6, 23.4 ± 1.7, 20.2 ± 1.5, 12 ± 2 and 44 ± 1.8 mBq g^-1respectively. The measured activity ratios of ¹³⁷Cs/⁴⁰K and ⁷Be/²¹⁰Pb confirmed the effects of the regional dust sources.

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