珠江口、大鹏湾和大亚湾海域海水及沉积物中放射性核素水平

Abstract

Abstract: The concentrations of radionuclides in seawater and sediment samples from the Pearl River Estuary, Dapeng Bay and Daya Bay in Shenzhen were reported. During the cruises in September 2013 and April 2014, seawater and sediment samples were collected and analyzed for ²²⁶Ra, ²³²Th, ⁴⁰K, ¹³⁷Cs and ¹¹⁰mAg. The activity concentrations of ²²⁶Ra, ²³²Th, ⁴⁰K and ¹³⁷Cs in the seawater were 12.8—42.6 Bq/m³ (averaged 21.7±7.3 Bq/m³), 3.2—26.6 Bq/m³ (averaged 11.8±6.5 Bq/m³), 529.7—974.1 Bq/m³ (averaged 820.6±120.0 Bq/m³ ), and 0.5—3.8 Bq/m³ (averaged 2.3±1.0 Bq/m³), respectively. They were 16.9—35.0 Bq/kg (averaged 27.9±7.2 Bq/kg), 22.0—59.8 Bq/kg (averaged 36.5±11.1 Bq/kg), 326.2—621.0 Bq/kg (averaged 456.2±100.1 Bq/kg), and 0.3—3.5 Bq/kg (averaged 1.5±0.7 Bq/kg) in the sediment. The activity concentrations of ^110mAg were below the detection limit for all the samples. The concentration levels of these radionuclides in this area were about the same as other near-shore areas in China.

Key words: radionuclide, seawater, sediment, Pearl River estuary, Dapeng Bay, Daya Bay

CLC Number:

TL75+1

Ding Minxia, Liu Guoqing, Feng Jiangping, Shi Jinsong, Luo Qi, Guo Zhiming. Study on radionuclide concentrations in seawater and sediments from the Pearl River estuary, Dapeng Bay and Daya Bay[J].RADIATION PROTECTION, 2017, 37(6): 453-458.

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Study on radionuclide concentrations in seawater and sediments from the Pearl River estuary, Dapeng Bay and Daya Bay

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