化工厂排污海湾砷含量变化规律

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本文运用最小二乘法、Q值比较法和逐步回归分析法,对化工厂排污海区海水砷含量分布和变化与一些理化因子的关系作了研究。研究表明,砷含量可以通过距离D、pH值和化学耗氧量COD_(Mn)三者的模拟关系式来表达。其模拟关系式为: As=144.9-1.021·InD-17.12·pH十0.1481·e~[(2·990·COD)_(Mn)]参加统计数据23组,相关系数为0.9978,剩余标准差为0.99。 In this paper, the least squares method, the comparison of Q value and the stepwise regression analysis were used to study the relationship between the distribution and changes of arsenic in seawater and some physical and chemical factors in the sewage discharge of chemical plants. Studies have shown that the arsenic content can be expressed by the relationship between the distance D, pH value and chemical oxygen demand COD_ (Mn). The correlation coefficients were as follows: As = 144.9-1.021 · InD-17.12 · pH 10 0.1481 · e ~ [(2.990 · COD) _ (Mn)] The statistical data were included in the 23 groups with a correlation coefficient of 0.9978 and the residual standard deviation 0.99.
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