THE DETERMINATION OF GROSS BETA RADIOACTIVITY IN SEA WATER AND SEDIMENT IN THE XIAMEN HARBOUR AND THE JIULONGJIANG RIVER ESTUARY
厦门港和九龙江口区海水与沉积物中总β强度的测定

Gross Beta radioactivity in sea water and sediment in the Xiamen Harbour and the Jiulongjiang River Estuary was determined in 1981. The value determined varies from 1.4 to 3.3 pCi/1 in sea water, with a mean activity of 1.9 pCi/1, and 3.2 to 5.3 pCi/kg·dry weight in sediment, with a mean activity of 4.0 pCi/kg·dry weight. The horizontal distributions of the gross Beta radioactivity in the sea water and the sediment showed a tendency of increase from south to north, which seemed to be correlative with the high gross Beta radioactivity in the Jiulongjiang River water and the tidal motion.