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通过对珠江口海区和珠江入海口处水体、表层沉积物和部分海洋生物的放射性调查,研究了总β、总α放射性、人工放射性核素~(90)Sr、~(137)Cs和U在该海区海水和沉积物中的含量、来源、分布规律及影响因素,并讨论了部分海洋生物体中的放射性含量,通过对海洋沉积物进行γ谱分析,研究了珠江口海区主要放射性污染物质及其来源,结果表明,造成珠江口及其邻近海区放射性污染的主要放射性物质是由珠江径流携带入海的近代工业所产生的天然放射性铀、钍系列和天然放射性元素~(40)K。
The total β, total α radioactivity, artificial radionuclide ~ (90) Sr, ~ (137) Cs and U in the Pearl River Estuary and the Pearl River Estuary at the sea entrance, surface sediments and some marine organisms were investigated. The content, source, distribution and influencing factors of seawater and sediment in the sea area were discussed. The radioactive content in some marine organisms was discussed. The γ-ray spectrum of marine sediments was used to study the main radioactive pollutants in the Pearl River Estuary, The sources indicate that the major radioactive material causing radioactive contamination in the Pearl River Estuary and its adjacent sea areas is natural radioactive uranium, thorium series and natural radioactive elements (40) K produced by modern industries carried by the Pearl River runoff into the sea.