Natural Radionuclides on Surface Sediment Gosong Beach on the West Coast of Kalimantan Island and Associated Radiation Indices

Abstract

Following up with radiological parameter analysis, gamma spectrometry was used to assess the specific activity of 238U, 232Th, and 40K in sediment samples collected at Gosong Beach, on the west coast of Kalimantan Island, Indonesia. Except for 40K, the mean activity levels of 238U, 232Th, and 40K were within the range of the global average. However, the radiological effects of radionuclides at Gosong Beach were found to be safe and no health hazards for the population of Gosong Beach, except for the annual gonadal dose equivalence, which was found to be slightly higher than the global average.