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本文研究的目的是确定软体动物对于铀在海洋生态系统中的分布所起的地球化学作用。对取自里海、日本海、马尔马拉海、爱琴海、黑海、地中海、波罗的海和印度洋的近代软体动物贝壳进行了生物地球化学研究,这些贝壳的物理、化学、地理和地球化学特征各不相同。本次研究中,分析了9个腹足类和54个双壳类不同种的贝壳以记录铀在不同季节层中的变化。季节层是由软体动物在整个生命过程中季节性的碳酸盐—有机相生成的。研究中使用的贝壳主要分3层:上(外)棱柱层,中棱柱层,内(珠母)层。此外,条件许可时,将贝壳性的头部、中部和下部分别进行分析,并且还计算出相对
The purpose of this study is to determine the geochemical effects of molluscs on the distribution of uranium in marine ecosystems. The biogeochemical studies of modern mollusk shells taken from the Caspian Sea, the Sea of Japan, the Marmara Sea, the Aegean Sea, the Black Sea, the Mediterranean Sea, the Baltic Sea and the Indian Ocean differ in their physical, chemical, geochemical and geochemical characteristics . In this study, 9 gastropods and 54 shells of different types of bivalves were analyzed to record the changes of uranium in different seasons. The seasonal layer is formed by the seasonal carbonate-organic phase of molluscs throughout life. The shell used in the study consists of three layers: upper (outer) prismatic layer, middle prismatic layer, inner (pearl) layer. In addition, when the conditions permit, the head, middle and lower parts of the shellfish are analyzed separately, and the relative