长江及其入海口附近总β放射性的测定

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用氯化钡-铁明矾法测定了长江及其入海口附近的总β。发现江水的总β低于海水。江水总β的波动范围是0.88—1.40pCi/L,平均1.13pCi/L。海水总β的波动范围是1.73—3.32pCi/L,平均2.23pCi/L。回归计算表明,在所考察的海域内,总β与氯度间的相关系数是0.916,其回归方程式是β=1.18+0.075Cl,长江水对东海的总β起着冲淡作用。 The total β of the Yangtze River and its vicinity to the seafloor was measured by barium chloride-iron alum method. The total river β is found to be lower than seawater. The fluctuation range of total β of the river water is 0.88-1.40pCi / L, with an average of 1.13pCi / L. The fluctuation range of total β of seawater is 1.73-3.32pCi / L, with an average of 2.23pCi / L. Regression calculation shows that the correlation coefficient between total β and chlorinity is 0.916 and the regression equation is β = 1.18 + 0.075Cl. The Yangtze River’s water plays a decisive role in the total β of the East China Sea.
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